I don't know what the difference is between what GModCEFCodecFix from 2024 and the new gmodpatchtool does, but whatever was changed causes my game to run terribly.

With GModCEFCodecFix 20240926:

gmodpatchtool:

Ironically, clicking out of the game with GModCEFCodecFix gives me better performance than with the new patcher:

System:

• OS: Arch Linux
• Kernel: x86_64 Linux 6.15.6-zen1-1-zen
• DE: KDE
• WM: KWin
• CPU: AMD Ryzen 7 7800X3D 8-Core @ 16x 5.05338GHz
• GPU: AMD Radeon RX 7900 XTX (radeonsi, navi31, LLVM 20.1.8, DRM 3.63, 6.15.6-zen1-1-zen)
• Rendering and GPU packages:
  • mesa 1:25.1.6-1
  • vulkan-radeon 1:25.1.6-1
  • xf86-video-amdgpu 23.0.0-2