External G-sync monitor FPS drops to 0 /freeze/stutter temporary fix

Hi guys

I'm not sure if this is posted here , but I thought I would do so. I personally battled with this problem yesterday for 9 hours.

I just bought yesterday a new Asus Swift PG248Q 144hz monitor with g-sync. I own an Clevo p870KM1-g Laptop with 1080 gtx and 75hz g-sync screen, to which the external monitor is attached to.

There was massive stuttering/fps drops/freezes which the external monitor is causing me when the g-sync is on. I think this has been a problem for a long time when combining different refreshrates screens together.

There is a temporary solutions for it. We have found out that the fault was are nvidia drivers and the creators update drivers to be specific (big surprise there ). If you're experiencing these symptoms roll back to drivers 378.91 to get rid of the problem. Those drivers are all the way from March!. All drivers above 381 (which I believe are the creators update drivers) will lag and stutter and freeze using a g-sync external monitor with your laptop. Also this issue has been sighted when using dual monitor setup with desktops. One being g-sync and other not.

I thought I'd share it with others struggling with this, because I sure was.

some talk about this:

https://eu.alienwarearena.com/ucf/s...ernal-g-sync-monitor?replyPage=1#post-2694405

https://forums.geforce.com/default/...sus-swift-pg248q-different-refresh-rates-fix/

http://www.mmo-champion.com/threads...or-Setup-(Questions-and-Concerns)-Please-Help!

https://www.reddit.com/r/buildapc/comments/6b6c35/terrible_stuttering_problems_with_a_new_build/

If anyone has found a permanent fix for this, let us know

 

Oh my god... why is NVIDIA so ... well, you know... NVIDIA...
Congrats on your finding, i been searching for this since yesterday without arriving to any conclusion.
I also ordered a external monitor to do some research!

 

Thanks! We haven't had any inquiries about this (yet), but this is good to know.

 

I don't think it very common. It is such a specific issue considering that it only occurs when the desktop is in extended mode. When cloned with the laptop's monitor it works just fine. When cloned they share the same refresh rate and I think that's the reason why it works. Maybe .

Comment from the NVidia forum:

"I doubt NVIDIA even acknowledged this issue so far, and thus it's impossible to tell if it is something intended by WDDM 2.2 (that the 381+ drivers support) and thus might be a Windows issue, or something else gone wrong."

At least I can play now with smooth g-sync 144hz with my triple screen setup. ^_^

 

It's likely an issue with WDDM 2.2 itself and/or WDDM 2.2 Nvidia drivers. For example, you also can't effectively turn off GSync on a per-application level with them if you have it on globally, HDR and 10-bit color issues on non-UHD displays, color profile issues,etc. among other things with WDDM 2.2 versions of Nvidia drivers (keep in mind that many of the non-vendor specific problems also apply to AMD WDDM 2.2 drivers, which indicates it may be a general WDDM 2.2 issue).

WDDM 2.2 was introduced with Windows 10 1703 ("Creator's Update"). Keep in mind that WDDM 2.2 is still immature. WDDM 2.1, introduced with Windows 10 Anniversary Edition, also had several problems for months (such as several D3D9 titles no longer working) until a Windows Update fixed issues. It's too bad one can't force WDDM 2.1 versions of newer drivers to install if the OS supports WDDM 2.2.

 

Thank you very much for this fix. It has worked on my external Acer XB271HUA G-sync monitor and I have no FPS drops anymore. You said you have a triple monitor setup; Are all of the 3 monitors G-sync? if so, in what way did you plug in all of the 3 monitors to get them G-sync all at the same time? Is it another laptop or device you have?

You see, I have the P870KM1-G laptop and I want a 1440P triple screen setup of the Acer XB271HUA G-sync monitors. Is there a way to plug all the 3 monitors via DisplayPort? I have bought a "mini DisplayPort to dual DisplayPort adapter". I was thinking to put my 2x DDI on my BIOS to my mini DisplayPort's instead of my Thunderbolt 3 ports, making me have more digital display bandwidth through the mini DisplayPort's. Then plug 1 monitor (centre) to the laptops mini DisplayPort and the other 2 monitors to the "mini DisplayPort to dual DisplayPort adapter". Would this work? I got a feeling it will work but my laptop screen will be off, which I will not be bothered about if I get the triple screen setup of the Acer XB271HUA G-sync monitors working.

I know that there is a mini DisplayPort to triple DisplayPort adapters; but I'm thinking that because that the monitors are 1440P they might need more bandwidth to get the max refresh rates, that's why I have gone for the "mini DisplayPort to dual DisplayPort adapter". I know that this will definitely give me 2x 1440P at 85Hz while my 3rd centre monitor will be plugged in to the laptops mini DisplayPort giving me 1440P at 165Hz.

Sorry for the long explanation, but its got my head spinning! I don't want to go and buy another two Acer XB271HUA G-sync monitors only to have 2 of them in the mini Displayports and the other one connected to the HDMI port. As you probably know that HDMI does not support G-sync.
It will be great if anyone can provide me an answer to this...
Kind regards

 

Hi , sorry to say I'm no external monitor expert so your guess is good as mine. If you have a friend, who has a g-sync monitor you should test your theory first before buying the third one. I don't think there's a way to get all of them to g-sync without changing which one of them is the main from the drivers.

As for my setup I calculated the laptops monitor to my three screen setup when I said that , So I have the Asus g-sync in display port, one older asus without gsync in the other display port and the laptops monitor. Even like this you can't have g-sync on at the laptop screen and the asus screen at the same time.

Sorry I can't help you .

 

No worries. Thank you for your thoughts though. The more information I get the better! the more the merrier as they say I may just have to gamble and buy another two Acer XB271HUA G-sync monitors and then experiment on them to see if some how I can get them all on G-sync via 3 DisplayPort interfaces. I will also buy a "1.3 mini DisplayPort to triple DispalyPort adapter" then I can experiment with that and the "1.2 mini DisplayPort to dual DisplayPort adapter" which I already have. If this works or does not work? either way... Then I will post the results with screenshots on the P870KM1 forum for other enthusiasts.

If the G-sync dream does not work then I will settle with 1x Acer XB271HUA G-sync monitor via mini DisplayPort as my centre screen and the other two Acer XB271HUA (G-sync disabled) monitors on each side of the centre screen via HDMI. So in theory I can not lose if I buy 3x Acer XB271HUA G-sync monitor's.
I will keep you up to date buddy! see you all soon.

 

I haven't tried as I don't have three display port screens available, but in theory you might be able to use one of the Thunderbolt ports for the third DisplayPort screen with the appropriate cable/adapter. Not sure if it truly works, though.

 

This is what I'm thinking too. You see there is 2x DDI (digital display interfaces) that can be switched via the BIOS between the Thunderbolt 3 ports and the mini DispalyPorts on the P870KM1. I were thinking that it is best to put one DDI through one mini DisplayPort and attaching a "mini DisplayPort to dual DisplayPort MST adapter" to that mini DisplayPort for the two side monitors to work; hopefully this will split the DDI going into the "mini DisplayPort dual MST adapter" to the two side monitors, but limiting me only 1440P@85Hz each (if I have worked it out correctly). Then my 3rd centre monitor; I will have to try and run it through one of the Thunderbolt 3 ports after I have enabled my 2nd and last DDI to one of the Thunderbolt 3 ports. Because there will only be one monitor plugged in to one of the Thunderbolt 3 ports using only 1 DDI, I will receive 1440P@165Hz for that one monitor. So it be something like this:

1 DDI to mini DisplayPort/s:
Left Acer XB271HUA G-sync enabled monitor 1440P@85Hz via "mini DisplayPort to dual DisplayPort MST adapter"
Right Acer XB271HUA G-sync enabled monitor 1440P@85Hz via "mini DisplayPort to dual DisplayPort MST adapter"

1 DDI to Thunderbolt 3 port/s:
Centre Acer XB271HUA G-sync enabled monitor 1440P@165Hz via one Thunderbolt 3 port.

Just to clarify! just in case anyone is new here and is reading this problem that; This (above) has NOT been tested yet! so I don't know if this will work are not. This is just a theory. But this seems to be the only way I think a P870KM1 user can be able to have a triple G-sync screen setup. One guy I know thinks this will work, but the laptop display will go off or be a duplicate of one screen. He also reckons that the HDMI 2.0 port on the back of the P870KM1 will be disable its self... Someone really needs to test this I am looking for my third screen now, as I have just purchased my 2nd Acer XB271HUA last night. Working solution or not?; I will post my results here and on the P870KM1 owners thread too. If anyone has tried 3X DisplayPort monitors on a Clevo laptop, then please share.
Kind regards

 

Have you looked up if someone on the desktop side has got split displayport G-sync working? Due to the way it works with timing when the screen refreshes then I don't think the concept works with two displays sharing the same symbol as they will never be perfectly in sync.

 

There. I'll say it for you. I don't have to care about political correctness, maintaining professional courtesy within the industry or a tarnished image. I actually do hope they hate me for calling them out in public as being evil idiots.

great find - thanks for sharing it / +5 rep, bro

 

Thank you for your insight but no I have not, due to me not knowing anyone with more than two G-sync monitors via a MST hub. I now own 2x Acer predator XB271HUA G-sync monitors (a third coming soon), I now understand about the G-sync timing as I have tried to split 1x DDI through a multi stream transport hub (mini DisplayPort to dual DisplayPort MST hub part# MSTMDP122DP) to two G-sync monitors. I get 2x 1440P@85HZ max but no G-sync or ULMB working.

I am now trying a different adapter called "StarTech ThunderBolt3 to dual DisplayPort adapter" (part# TB32DP2). G-sync works through this adapter. 2x DDI to ThunderBolt3 ports gives me 1440P@165Hz with G-sync on two monitors, but 1x DDI to ThunderBolt3 ports only gives me one screen at 1440P@165Hz with G-sync working. It seems that there something wrong with my ThunderBolt3 controller as it does not allow me to daisy chain multiple monitors using only 1x DDI like what the mini DisplayPort can do. This is what it states in my "device manager" on Windows 10 about my ThunderBolt3 controller;

"Currently, this hardware device is not connected to the computer. (Code 45)
To fix this problem, reconnect this hardware device to the computer."

If some how I can get the ThunderBolt3 controller fully working I may be able to complete my split screen adapter tests which I have wrote down and I will be posting it on the Clevo thread soon when I have finished. I have tried a total of 4 adapters now and none of them seem to work with G-sync or some work with 1x DDI daisy chaining to two screens but still without G-sync, one got hot and started smoking etc, etc. The only promising adapter that MIGHT seem to give me a triple G-sync setup is the "StarTech ThunderBolt3 to dual DisplayPort adapter part# TB32DP2" but it seems I can not daisy chain two monitors from 1X DDI to ThunderBolt3 port (unlike the mini DisplayPort). I think this is due to the ThunderBolt3 Controller not working. If I can complete this final test, I will know where I stand with the triple G-sync monitor situation. Hopefully this "StarTech ThunderBolt3 to dual DisplayPort adapter part# TB32DP2" works by daisy chaining 1x DDI to two same monitors with G-sync fully working, then I will be able to run the 3rd monitor through the mini DisplayPort using the other last DDI, giving me a triple G-sync setup (please). If none of this works then I will have to settle with 2x DDI to mini DisplayPort's with two monitors connected to each of the mini DisplayPort's and my third monitor plugged in to my HDMI port... But this will make me very upset as I will only have two G-sync monitors and one total crap HDMI laggy monitor :-(

If anyone knows better then please share. Kind regards.

 

I have now sorted out the Thunderbolt3 controller issue. I have rolled back the ThunderBolt3 drivers and software and now the ThunderBolt controller is on the "device manger" in Windows 10. It looks to be all working and the ThunderBolt software had detected the "StarTech ThunderBolt3 to dual DisplayPort adapter part# TB32DP2".... So it all looks good! now I'm going back to testing

 

THE P870KM1 OR P870DM3 MULTI, SINGLE, G-SYNC, NVIDIA SURROUND & SCREEN ADAPTER TEST THREAD
http://forum.notebookreview.com/thr...a-surround-screen-adapter-test-thread.806524/

 

Hi

Just came back from the Philippines. I was working there for a month. Do you guys know if the newer drivers have fixed the original issue? Do I dare to update my GPU drivers?

Thanks

 

Testing it know for you pal. Give me a moment...

 

Cool thanks . I don't have my external screens here where I am so I can't test it myself.

 

No worries.
And no, Nvidia have not fixed this. I have just tried my P870KM1-G on one of my Acer predator XB271HUA G-sync monitors via the mini DisplayPort to DisplayPort cable, using Nvidias latest drivers, which is the 384.76. And it still stutters or hangs at 1-5FPS. The games I tried for a few minutes were Deus Ex: Mankind Divided, Team Fortress 2, & Carmageddon; Max Damage. I hope this helps.

Note: Driver 384.76 works great for 1080 GTX SLI 7680X1440@85Hz with G-sync disabled. I got an extra 10FPS on Deus Ex: Mankind Divided compared to driver 378.91 which I had before I got the triple screen setup.

 

Wow, still nothing huh . I wonder when someone will fix this. Anyway thanks for trying it out

 

Your welcome. I really need this fixing too, because I can not play Witcher 3 on 7680X1440@85Hz. To play it, I have to disable Nvidia Surround and play it on single (centre) screen with no G-sync. I don't want to revert to 378.91 (Notebook edition) just for one game to run with G-sync enabled, when I play most of my games with Nvidia Surround with Vsync on 85Hz.
Nvidia need to know this, I think it only effects our laptop community. What plonkers!

 

Finally I found others with the same problem....I have a Msi GT73VR and an acer Z35. I thought that the acer was defective until I found this. I´ve installed the suggested drivers and now gsync works. How is it possible that nvidia doesn´t solve this?

 

Excellent!
Because they're a selfish group. I have emailed them about this problem. Also the 378.91 (Notebook edition) driver has a 30fps second less power on Deus Ex: MD game compared to the 384.76 (Notebook edition) driver due to the latest driver having improved SLI scaling.

IF NVIDIA IS READING THIS: Please sort this driver issue out! also give us an MST Hub that can split a G-sync signal.

 

Actually im using 378.92

 

Great even better. I will check it out. Cheers.

 

We are looking into this bug. I don't have an ETA yet as we do not have a root cause yet. If you have NVIDIA driver issues, please file a driver feedback:

http://surveys.nvidia.com/index.jsp?pi=6e7ea6bb4a02641fa8f07694a40f8ac6

The more feedbacks I receive, the higher priority I can assign a bug.

 

Yeah!! so Nvidia does have a heart for laptop users. That's great. Thank you for your response. I will fill in a driver feedback form.
Also may I ask; Is there a DisplayPort MST hub that can split a G-sync signal. This will be great for a Nvidia Surround triple screen G-sync setup for laptops and PC users who only have a Nvidia card with one or two DisplayPort outputs. For a instance the Nvidia GTX 1080 Founders edition only has two DisplayPort outputs. Kind regards,

 

I have filled in a Driver Feedback form for this problem. The more the merrier

 

Report sent.

 

Report sent. Hope you solve this problem soon. Thank you

 

Now there is an account you don't see very often

 

Thank you for noticing us I've been as noisy as I can in your forums.

 

I sent a report as well. Same issue here.

 

Thank you all for your feedbacks.

 

Thank you for being active here and GeForce forums. Much appreciated

 

Guys. Nvidia is asking our help to fill another feedback form to Microsoft. Please follow the instructions in the post.

https://forums.geforce.com/default/...dows-10-creators-update/post/5197879/#5197879

 

Here's mine so you can upvote if it's possible.

https://aka.ms/atuox0

 

Did you guys make the feedback and recorded the sample of the stuttering?

 

Thanks for trying to keep this going. I'll send in my info to nvidia and microsoft shortly. I started having the problem recently out of nowhere. Massive FPS loss (1-15fps). I get it nearly every time I start Overwatch and it happens periodically in PUBG. Only fix is to disable gsync. Weird thing is I hadn't updated any drivers and windows update has been disabled (using ooshutup) when the problem cropped up out of nowhere. I'm on the pre-creators update build. About two weeks ago I starting getting that terrible stuttering when hooked up to my external gsync display (ASUS pg279q), and I never had these issues before. Problem doesn't happen when playing on laptop screen. I was on a driver from late may or early June (post 378), had no issues, and then the problem started out of no where. I've done everything: no temp issues, still repasted gpus with grizzly kryonaut, and CPU with CLU, updated all drivers, messed with various nvidia setting like power management. Last thing I'm going to try tonight is finally rolling back to 378.xx driver.

 

No problem. I just want to speed this up so we can actually get this fixed before the 20 series cards come and our rigs are old

378.92 should work or disable g-sync

Manuel here (same guy who posted here from nvidia) is saying they don't have enough samples to pinpoint the problem because people in the nvidia forums are just complaining not submitting. So please spread the word so we can do something about this annoying bug.

https://forums.geforce.com/default/...dows-10-creators-update/post/5199195/#5199195

 

Won't be at my computer for a while today. Just read this in release notes for new 385.28 driver:
***61557; [GeForce GTX 1080][G-Sync]: With G-Sync enabled, stuttering occurs when playing
games on the external display. [1931970]

http://forums.guru3d.com/showthread.php?t=416278

I'm assuming this means it is addressed and hopefully fixed. Will have to try later tonight.

Edit: Nevermind, it is listed as an "open issue" so it probably isn't fixed but I think that means they are looking into it.
http://us.download.nvidia.com/Windows/385.28/385.28-win10-win8-win7-desktop-release-notes.pdf

 

Well. Still a step to the right direction I guess.

 

Yes! It's great to read in the release notes that they are aware and must be looking into it.

One thing I'm wondering though, is everyone with p870 with gtx 1080 sli hooked up to external g sync monitor experiencing this FPS drop/stutter with g sync turned on while on any driver newer than 378.93? If not, I'm wondering what is unique about our systems that causes this? It has to be driver related though, because the problem is gone the moment I load up 378.93 or earlier.

 

382.53 here and no issues.

 

Do you have windows version 1607 or the 1703 (creators update I believe)? . It seems that the issue doesn't exist in 1607. I haven't tried it myself yet.

 

I have version 1703.

 

I was wondering about this. I am on pre-creators update 1607, and unfortunately the problem still exists. I haven't updated, using ooshutup to prevent automatic windows updates. I may try creators update just to see if it helps, but doesn't sound promising if others like you are affected.

 

@qwerty0025 @Meaker@Sager What monitors are you using? I'm on ASUS PG279Q, hooked up via display port. Monitor refresh rate is overclocked to 165hz.

 

PG278Q here, the original swift.

 

PG248Q here 144hz via display port . Laptops g-sync is 75 hz.

Update for my previous comment. I did a clean install with 1607 version and the problem still exists with the newest display drivers unfortunately as Hexum said.