XPS15 9550 unstable HDMI to external monitor.

Hi,
I recently purchase a xps15 9550 4k. I was thoroughly impressed by it's built quality and design, until I started using an external monitor for gaming. When I plug my external monitor and set it as an only monitor. I'd occasionally lose connection with it. It usually comes back on after 5~10 seconds, but 2 out 3 times iI'll have to unplug my cable and replug. I feel like it's a driver problem between intel 530 and 960m. I updated all the drivers and bios to latest. Even switched to a new cable. Is there anybody else having this issue? Please guide me on how to fix this. If this problem persists, I'll just swap it out with a razer blade.

 

Have you used the latest official intel one, not Dells offering?
You will probably have to install it via the device manager as it will say it isn't compatible with Dells driver.
https://downloadcenter.intel.com/downloads/eula/26078/Intel-Graphics-Driver-for-Windows-10-and-Windows-7-8-1-15-40-?httpDown=https://downloadmirror.intel.com/26078/eng/win64_154025.4463.zip

Google manual driver install if you need more info

 

kind of unrelated...but I ran into another issue. I was having trouble connecting to a wifi at home.
But when I removed external usb 3.0 HDD from usb port on left. problem went away. When I plug it back in. same problem...
is this a known issue? Jesus Christ why is this 2k laptop so ****ty. I'll probably return it and get razer instead.

 

It is an issue with routers that have USB3, they have a setting to work round it, or more like the setting causes problems

 

oh looks like usb3.0 interferes with wifi signal. Thanks for your help!