How to configure Desktop Window Manager GPU swap timings?

[JRMBelgium]

I have the following issue:
- I launch BF1: 180+fps
- Alt+TAB or Windows key to read something in a browser or discord
- I open my game again: 140+fps
- I can switch between windows and the game as much as I want again: FPS never goes back to 180fps
- But if I stay in my desktop long enough, then return to my game, fps is back to 180+fps

The only cause I can think of, is the Desktop Windows Manager that determins that once a fullscreen game is launched, all GPU power should go to that game. When I go back to desktop, GPU power is reserved for all the things I need in the 2D desktop environment and it can no longer be fully dedicated to that game.

But it seems there is some sort of timer that determins that once an inactive 3D service gets put in the foreground again, like my game, it gets the maximum GPU power again. In my case, back to 180+fps.

To be clear, GPU usage and clockspeeds remain the same in 180+fps or 140+fps, only the framerate is different.

So my question is. How do I force WDM to give full power to my fullscreen game again without waiting minutes between going out of my game and returning to my game.


Here is a demonstration of the issue:
https://streamable.com/xseya1

 

[Assimilator]

This likely has nothing to do with Windows and everything to do with GPU drivers.

If you don't want it to happen, don't Alt-Tab. Buy a second monitor and put chat there.

 

[kiriakost]

I do not think that the operating system this is that smart.
But you may freely nag as much it helps you, about the terribly written AMD Drivers.
I am returning to NVIDIA soon because of the terrible work of AMD regarding drivers and of how poorly the AMD GPUs they are handling the on-board memory.

 

[Caring1]

I do not think that the operating system this is that smart.
But you may freely nag as much it helps you, about the terribly written AMD Drivers.
I am returning to NVIDIA soon because of the terrible work of AMD regarding drivers and of how poorly the AMD GPUs they are handling the on-board memory.

No mention of AMD was made in the post, and if you care to Google, getting stuck on low locks is common for Nvidia too when Alt Tabbing out of a game.
Your post is irrelevant to the question.
One of the simplest solutions I have read is with MSI Afterburner open, hit Apply and the clocks revert.

 

[JRMBelgium]

First of all, the majority of the alt+tab issues you'll find online, are posts from Nvidia users.
Second, as shown in the video I added, the clockspeeds remain the same. No difference in clockspeeds at 140 or 175fps.

 

[basco]

is there a option ingame for windowed or exclusive fullscreen or other modes ?

on some games that helps with alt-tabbing

 

[JRMBelgium]

is there a option ingame for windowed or exclusive fullscreen or other modes ?

on some games that helps with alt-tabbing

There is, but that already lets you start off at the lower framerate.