Weird Framerate issue with games running in windowed mode

[Norlig]

Hi There!

 

I am having an issue with my PC where all games run very poorly in windowed or fullscreen-windowed mode.

Fullscreen games runs at normal 144hz maximum.

 

If I have any motion on my second monitor, my Main GPU will not be able to be utilized 100%, and I get microstuttering like crazy

That motion can be a GIF, a youtube video, or a smily face on skype that winks.

 

I got a second monitor, so i like running in fullscreen-windowed mode to more easily do stuff while respawning or waiting in games.

 

Main monitor has g-sync and runs at 2560x1440@144hz
Second monitor is 1440x2560@60hz

GPU: 980ti

CPU: i7 3770k@ 4.8Ghz

Ram: 16GB 2200Mhz

Storage: 2x SSD's in Raid-0

OS: Win10 x64 Ent

 

 

Tried adding a second gpu (750ti) to run monitor 2, but didn't help any, other than to remove screen tearing on monitor 2.

Tried removing my CPU overclock, but no difference

Last week I reinstalled windows to see if that helped, but I am getting the same issues.

If I remove the second monitor, and have motion in the background of the game (on my main monitor) , I dont have an issue.

If I keep the second monitor, and have motion in the background of the second monitor (different browser tab), I dont have an issue.

 

basically, I get bad performance if Anything is moving on my second monitor.

 

Video with Example here: 

The Video shows that my FPS drops from 144fps max, to Random around 100fps when there is any motion on the second monitor.

Ignore the 30fps, as that is when the Game is not focused on the PC.

 

while in game, the GPU usage will drop from 99%, to 60-80%.

It microstutters in both Menu and while in game.

 

Currently using Driver: 368.95

 

 

Anyone got any ideas to what i can try?

[Norlig]

bump

[Norlig]

bump

[Norlig]

FYI

Seems to have been fixed with latest nvidia driver.

 

Great forum btw,..