Actual fps well below steam indicator when playing in fullscreen or borderless windowed

Issue Description:
Actual performance seems to change depending on if I’m using fullscreen/windowed fullscreen or windowed mode. Fullscreen/borderless feels way less smooth and like my fps is way lower than it appears to be, even though the steam fps counter consistently reports between 150 to 70 at worst. However, it will constantly feel like I’m floating between 70 to 24 fps in reality.

I saw another person on reddit post about the same issue, who had fixed it by switching to windowed mode. I did the same and noticed a massive increase in smoothness and general feel of the gameplay. Even with no real noticeable difference in fps on the steam fps counter.

Steps to Reproduce:

1.Switch to windowed mode
2. Game feels much more smooth even with the same framerates
3. Switch back to fullscreen or borderless fullscreen
4. Game feels like I’m getting half my fps or worse at any given time, less responsive, more prone to being “stuttery” in demanding situations.


Approx. Time of Issue & Timezone:
All the time, happens consistently.

Reproduction Rate:
Constant (100%)

darktide_launcher.log (252.9 KB)

I saw someone suggest turning fullscreen optimizations off and that did not work for me.