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I have got a P870Dm (not a Sager but same as this) and I don't understand but my Laptop get low performance when I active the SLI of my two GTX1080.
When I use in single mode I got near 80FPS to Titanfall 2 and 20FPS with the SLI activaded. On Rise of the Tomb raider the FPS is not constant. It up or down and some time the game freeze for some seconds.
All my games have low performance in SLI mod. I must play in single mod to have fluidity.
I don't know what the problem. The computer don't crash.
Are there any other games that exhibit this? I typed Titanfall 2 SLI problems in the search engine and it seems the game doesn't run well with SLI and the default profile. Perhaps you need to find an alternate SLI profile that works better and set it in Nvidia inspector.
Other than that, you could try some newer and much older drivers from Nvidia's website and see if that helps. SLI performance has reportedly been hit and miss with some driver versions lately (not just in laptops). Don't forget to run the latest version of Display Driver Uninstaller in Safe Mode before you install new drivers to be sure to get rid of any remains that could be causing the issues.
If it isn't a driver issue, check if it behaves the same in true full screen mode vs. windowed/borderless windowed (aka "fake full screen") mode. If the problem is mainly there in proper full screen mode but SLI works better in (borderless-) window mode, your SLI cable might not be connected properly or damaged, as windowed SLI uses a different technique and doesn't rely on the SLI cable as much.
Full screen and windows screen don't have the same comportement for SLI ?
I will try this evening (I m in France).
For my driver I m on date, but.... I don't have install it in safemode. I m using the nvidia experience software that update automaticaly my driver.
For Titanfall 2, dev have say that they have include the SLI this year and I have see a youtube video with a gamer that test a SLI on this game. But I have issue to Rise of the Tomb Raider too.
PS:You work for XMG (your signature) ? My laptop is the same as U726.
Traditional SLI works only in true full screen mode and generally performs better than Windowed SLI which has been added later. Windowed SLI is a different technique where cards communicate more over the bus than over the SLI cable.
Download Display Driver Uninstaller and run it. Select Safe Mode and let it uninstall your drivers. Once you get back into non-Safe-mode Windows, install whichever driver you wish to try. Rinse and repeat whenever you install a new driver.
It might also be a good idea to try to not install GeForce Experience with the driver and see if that helps as it can sometimes mess up things.
Some drivers can work better and some worse in some games when it comes to SLI.
No, I'm a regular uses and it's just the laptop I own. Official representatives of XMG will always have the XMG logo in green.
It's generally a good idea to post your laptop's make and specs in your forum signature so people can see what system you have if they are trying to help you.
Which resolution is that? 3840x2160 (the single card Witcher 3 framrates look about right for that resolution)?
The temperatures seem to be a bit on the high side, so there might be some thermal throttling going on. Try to set your fans to full speed (FN+1) while you're gaming and see if that helps with performance (it should definitely help with temperatures). If it does help with performance, perhaps you could carefully try to undervolt your CPU and GPUs a bit to keep temperatures lower.
If it happens to get worse with the fans running at full blast, the laptop might not be fed enough power and there might be an issue with your power supplies.
Just to check, you are gaming with the laptop connected to power, not on battery, right?
Thx for tour answer.
Indeed my witcher3 resolution is 3840x2160 as all my game. You think that 45-50 fps would be the right score? I m a little lost between games supporting sli or not. On Titanfall2 I have follow your instruction and passed to window screen and I m near 60 fps instead of 20-30. My resolution is the same as witcher3 but in full screen I'm in 16/9. In 4/3 the max resolution is 28xx x xxxx (I don't remember exactly) and the game have more fps. I don't know how do the YouTube player that show in them video a Titanfall with 80fps with 1080 Sli. I have saw that the graphical option is not the same because the video is on date from 2016 and since this date the game have had a big update with new graphical options as the "very high". Ah one question : vsync , yes or no for sli ?
For fan speed I let the laptop manage it automatically. I known that the fan isn't at maximum because when it arrive the laptop do the noise of an air force plane.
I don t have modify my cards, in bios or Nvidia software , except the switch to play in sli mod. In some web site or YouTube video I see some time the player modify some Nvidia 3d propertie, but I don't touch them because I don't know what they do (YouTube video in English is to fast for my French ears and my bad english).
I always play with the laptop connected to the sector.
I don't know about SLI scores, since I only have one card, but your Witcher 3 single card framerates looked alright for 3840x2160 to me. Perhaps someone that has the 1080 SLI setup could chime in if your 40-50 FPS is normal for SLI at UHD resolution. But I assume it is pretty normal with maximum or close to maximum graphics settings in the game (including Hairworks, etc.).
It's always a gamble, especially recently. To get the best SLI performance you'll have to tweak your Driver profile settings for each game with NvidiaInspector anyhow (which can also get SLI to work if there is no SLI profile included in the driver, but it requires lots of trial and error).
You need to test the same resolution (borderless) windowed and full screen (if the game allows bith modes) to see the difference. Normally proper full screen should work a bit better. If you lower the resolution the game will perform better of course.
Has that "youtuber" you referenced used the same resolution you do?
But it looks like SLI is working for you anyways. I searched a little on the internet and apparently Titanfall 2 SLI performance apparently has tanked with newer drivers. Try a clean install of Nvidia drivers from 2016 when SLI support was first added (sorry, not sure of the version, you'll have to search for yourself).
As vor Vsync, disable it and see if that helps. It can be better or worse from game to game. If you use GSync (and you have a screen & video cards that support it), turn Vsync off in the game and use a framerate limiter (RTSS seems to do a good job) to limit your FPS to ~3 frames below your screen's refresh rate. If you have Gsync enabled, you could also try to temporarily disable GSync in Nvidia Control Panel and see if that helps with your game's performance, as some games/apps don't like it.
Put it at "Maximum" for testing. If it doesn't help, then put it on automatic or "Overclock" (even if you aren't overclocking) in Clevo Control Center, which usually works a bit better than "Automatic".
You can't really mess anything up with Nvidia control panel. Feel free to experiment a bit. If something doesn't work, use the button to revert to defaults. There should be tooltips in French as well if you installed the French/International version of the drivers.
The best thing for tweaking SLI and image quality settings (also per-profile) is NvidiaInspector, though. Not sure if there is a French translation for that.
I have similar specs ... am experiecing the same issue only when i enable anti aliasing but when disable i get normal fps in sli. Are u still experiencing the issue ?
Problems? See this thread at archive.org.
