Hello, for a while now I try to figure out very poor performance in Ghostwire: Tokyo when ray tracing is on.
I tried to run this game on both Windows and Linux and the RT performance difference is huge. (45 FPS vs 15 FPS).
My hardware is R5 2600 6c12t CPU and RX 6700 XT so not too old not too new. I was hoping for someone with the same GPU could confirm the same issue and/or maybe point to solution.
There’s also a few very weird things I also noticed that happen when I turn on ray tracing:

  1. When I move (or open game) the CPU spikes to 100% and game often freezes for a 2-6 seconds. CPU spike also happens when I break some objects or just environment changes. It feels like the issue is with textures loading but how could this be connected to ray-tracing?
  2. Trying to just hold still for a few minutes will result in normal CPU usage. GPU goes to 99% but power draw is around 150W. (Card under heavy load can pull 195W and it does so in Windows). But still performance is bad. No more than 15 FPS compared to running game on Windows 45 FPS with same settings.
  3. Very laggy in start menu. Like 4 FPS.

More detailed info about my system:

OS: Manjaro Linux x86_64
Kernel: Linux 6.13.5-2-MANJARO
CPU: AMD Ryzen 5 2600 (12) @ 3.40 GHz
GPU: AMD Radeon RX 6700 XT 
Memory: 31.27 GiB
Mesa: 24.3.4-arch1.1
Proton: I tried GE, Experimental, Hotfix.
  • hypertown@lemmy.worldOPEnglish
    2·
    2 days ago

    Do you have Vulkan-radeon installed?

    Yes:

    $ pacman -Q | grep -i radeon                                                                                       
lib32-vulkan-radeon 1:24.3.4-1
vulkan-radeon 1:24.3.4-1

    $ ls /usr/share/vulkan/icd.d/  
radeon_icd.i686.json  radeon_icd.x86_64.json

    Any errors running vulkaninfo?

    I’m not sure what do you mean, I can run vulkaninfo but I thought it’s only for displaying info about vulkan. Can’t see any errors there.

    Your cpu is old, I wouldnt expect much more than 40 fps

    True, but I’d be happy if I get even 30. Except I don’t event get 15… Besides if CPU on Windows hovers around 40% and GPU is 99% then I’d guess that CPU is not a bottleneck. That weird 100% CPU spikes must be related to either configuration or driver issue.

    I do have a 6700xt and can test with cyberpunk for RT if you want

    Thanks, I tried some other games like Quake RTX. Portal RTX, Shadow of the Tomb Raider, and I feel like performance there is very similar to that on the Windows. Defienetly no CPU spikes or random freezes.
    I don’t have cyberpunk (waiting for PC upgrade) so I can’t compere but you can post the results if you want, it can be useful.