[Linux] Weird lag spikes for no reason

cemu-project / Cemu

Cemu - Wii U emulator

https://cemu.info

Mozilla Public License 2.0

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[Linux] Weird lag spikes for no reason #1049

Open t0mtee opened 9 months ago

t0mtee commented 9 months ago

I'm running:

Debian 12
KDE Plasma 5.27.5
Wayland, but also happens on X11 (more noticeable as I can uncap FPS) And my specs are:
Ryzen 5 5600
RX 6700 XT
32 GiB RAM log.txt Here's a frametime graph - I am simply standing still, there's no shader compilation or anything, but my FPS will go from 70 to 40 and then back up to 70 after a few seconds for seemingly no reason.

I built Cemu myself on commit bab1616 with this script.

Squall-Leonhart commented 9 months ago

Turn off SAM and retest, there are odd performance issues with it in current drivers.

t0mtee commented 9 months ago

Thanks for the response! The issue still happens with SAM disabled (I disabled Above 4G Decoding and Resizable Bar in BIOS) and after disabling all optimizations in my build script.

t0mtee commented 9 months ago

Also happens on AppImage

t0mtee commented 9 months ago

Continues to happen with all mods except FPS++ disabled - I've tried all the frame average and fence type options, it continues to happen

t0mtee commented 9 months ago

Happens outside too

I have:

Verified my game installation (the DLC and Update was corrupted but I have fixed that)
Tried using both RADV and AMDVLK, no difference (at least I'm 90% sure I set up AMDVLK correctly. Mangohud says I was using Mesa but using the same ENV variable in Yuzu, Yuzu itself tells me It's using AMDVLK instead of RADV, so I used the same ENV variable for Cemu so it should have used AMDVLK)

menguele commented 8 months ago

This is probably not caused by CEMU, test in another heavy game, be it within CEMU or native/Proton/Wine with uncapped FPS and see if the same occurs, or see if disabling FPS++ resolves the issue.