Alt-tabbing / Interrupting process at all in-game causes massive hitching

[ZM_]

GPU: ASUS RTX 4070
CPU: AMD R7 5700G
RAM: 32GB 3200MHz
OS: Windows 10
Install Location: 4TB M.2 NVMe SSD

This occurs in both fullscreen and borderless windowed. If the process of the game is interrupted at all, the game starts to hitch a significant amount, roughly a one second hitch every second. This also occurs in replays, where skipping ahead on the timeline to any point can cause the hitching. The bug does not seem to be consistent, in some cases it will occur instantly, other times it will take multiple process interruptions before initiating.

 

[ZM_]

Sent this bug report without testing it in today's build, and it seems to have been fixed. Borderless Window now acts as if it's windowed like it should and fullscreen still has stuttering but fixes itself after a while.

 

[ZM_]

I guess I didn't check enough because the issue persists. This is just spectating a match and this is what's happening after I alt-tabbed. I can't record it on my PC as Shadowplay stops recording entirely if it hitches. This is on new drivers after running DDU.

View attachment 20240620_2058041.mp4

Temporary fix is setting it to windowed and using the command citadel_force_resolution "width" "height" and reduce the width value by 1. For my usecase, on 2560x1440p, I do "2559" "1440". So if you're on 1920x1080p, do "1919" "1080", it'll look almost indistinguishable from borderless windowed, although the right edge will not be drawn.

 

[ZM_]

I'm bumping this because it's been 3 months since I brought this up and it's still plaguing my game. I'm not even able to do the temporary fix I found above because the command is now dev protected. There's been times where even relaunching my game twice doesn't fix the issue, and I've had to abandon a match because it was entirely unplayable. I've tested it with Deadlock being the only process open, I alt-tab, and the issue persists. (Video is a live game, not my gameplay / replay)

View attachment alttabbug.mp4