Hellpoint (v366) has very bad framerates

So I tried playing Hellpoint (GOG Linux version 366, Unity-Engine) on my Manjaro PC and it was unplayable because framerates dropped below 10fps!

I tested it on Win7 (same PC) and on a Manjaro notebook with no problems. Details below:

1. PC - AMD Ryzen 5 2600, 8GB RAM, AMD Bonaire XT/Radeon HD 7790

  • Manjaro Linux (Cinnamon), Kernel 5.15, amdgpu 22.0.0, Mesa/Vulkan 21.3.7-2 > bad framerates (vkcube runs good)
  • Win7, 64bit > good framerates

2. PC (Notebook) - AMD Ryzen 3 5300u, AMD Renoir Graphics, 8GB RAM

  • Manjaro Linux (Gnome), Kernel 5.15, amdgpu 22.0.0, Mesa/Vulkan 21.3.7-2 > good framerates

The test with Win7 just shows, that the old graphics card in my first PC is not the problem. Which leads me to the question: What is the difference between those two Manjaro Editions?

Obviously the DE or in detail Gnome runs on wayland. But is this really the point?
Any suggestions? Thanks in advance.

So for testing I installed Manjaro Cinnamon on PC#2 too and surprisingly it worked with playable framerates.

It seems the problem has to do with amdgpu/mesa and my GPU :thinking: