Marvel Rivals losing 183FPS on average vs windows

cane-amid-skirmish · March 6, 2025, 9:32am

Need Help: Poor Performance in Marvel Rivals on CachyOS vs Windows

System Specs

CPU: Ryzen 7800X3D
GPU: RTX 4090
RAM: 64GB DDR5 6000
OS: CachyOS (linux-cachyos-bore)
Software: Latest updates via sudo pacman -Syu
Proton: Using cachyos-proton
Launch Options: game-performance %command% (shader-precache enabled)

Issue

I’m experiencing significantly worse performance in Marvel Rivals on CachyOS compared to Windows, despite having high-end hardware:

CachyOS: 191 FPS average with terrible performance feel (66 FPS 1% low)
Windows: 374 FPS average 330-360 FPS stable

This represents a nearly 49% decrease in average FPS on Linux, but even more concerning is the 1% low performance, which is 75% worse on CachyOS compared to Windows.

Both benchmarks were conducted under identical conditions:

Practice range
Same viewing angle
Fullscreen mode
All settings lowest/performance/off
Reset average & 1% low stats
One minute of observation

[I have 2 camera pictures of the benchmark results that I can share for comparison]

Questions

Is this performance gap normal?
Am I missing any Linux-specific optimizations?
Has anyone else experienced this issue with Marvel Rivals specifically?

Any suggestions would be greatly appreciated!

[Album] imgur.com

GRetriever · March 8, 2025, 12:08am

Don’t have a 4090 but bought my brother’s 4090 and it should be here tomorrow and I can test again. With my 2080, the game runs smooth to me with no hiccups. Without Frame gen, I am getting 65-70 FPS and with it enable it is around 80FPS.

Edit: This is at 4K btw. I am assuming you are running at a lower resolution. Unfortunately, the game has locked the resolution and it can’t be changed.

Edit 2: I let the Vulkan shaders compile before the game started. Maybe some of the performance issues are because you precached?

Proton-CahcyOS

Launch Settings:

PROTON_USE_WAYLAND=1 mangohud DXGI_ENABLEUE4WORKAROUNDS=TRUE PROTON_USE_FASTSYNC=1 ENABLE_HDR_WSI=1 DXVK_HDR=1 PROTON_HIDE_NVIDIA_GPU=0 PROTON_ENABLE_NVAPI=1 DXVK_ALLOWFSE=TRUE %command%

Frame Gen Off

Frame Gen On