Borderless Fullscreen has performance issues intermittently

Issue Description:
While using borderless fullscreen, sometimes the application behaves as if it is no longer in focus or needs to re-enter fullscreen. Pressing ‘Alt+Enter’ will usually fix this for a bit, but it inevitably returns to some stutter/chugging. Using exclusively fullscreen seems to make performance consistent.

Discord chat confirmation of it not being a one-off, there are replies to this message that corraborate Discord

Steps to Reproduce:
Enable Borderless Fullscreen
Attempt to play
Possibly move mouse outside game or alt tab to another program
Observe performance issues

Mission Name (If Applicable):


Player ID:
steam: nossarian

Approx. Time of Issue & Timezone:

Reproduction Rate:
Common (<50%)

Upload Console Log:

Upload darktide_launcher.log:

console-2022-11-19-16.29.20-2b733f76-cd7d-43ac-b5fa-e6da87aa62b5.log (120.0 KB)
console-2022-11-20-17.21.55-362bf7a7-a314-4e92-93b6-5271e77cd877.log (180.1 KB)
console-2022-11-20-19.59.24-226f15c9-ea63-4c70-bae6-671fdd2d8913.log (704.2 KB)
console-2022-11-21-21.49.48-37869195-e4ef-4899-99a2-359fc96939c6.log (450.5 KB)
console-2022-11-22-20.46.01-e18ace32-4c95-4c67-ac7a-7c072234e76d.log (178.1 KB)