@Yves Is there anything else I can try? If it's happening on my OS, there's a chance it could happen to someone else's OS, and no other game or application has this problem. Can I send any logs or mfa examples to you?
Edit: another issue related to this is screen capturing software breaking the record on frame shifts...
Bumping as I still have no fix.
There are 2 extensions you can try to solve this problem:
1. Ultimate Fullscreen
2. Windows Control - this has an option to bring the window to the front - which you can use as Start of Frame or Always as you need it.
Windows Control works, but it resets on frame change.
I've tried all manner of workarounds in events using Window Control, but it etierh breaks between frames or it stops alt+tab from working problem, or the window loses focus whilst the taskbar is still showing.
Why do you need alt+tab? Is this something particular in the game - or just general if someone wants to exit your game and leave it running?
Because the workaround I used in some of my games was to automatically make the game go into window mode when it was paused - and revert to full screen when pause ended (if they were playing it full screen). That way they weren't jumping away from the game when it was full screen and it solved my issues with the display.