Compatibility Report

• Name of the game with compatibility issues: Grounded
• Steam AppID of the game: 962130

System Information

• GPU: NVIDIA GeForce RTX 2070 SUPER
• Driver/LLVM version: nvidia 510.68.02
• Kernel version: 5.15.38-1-MANJARO
• Link to full system information report as Gist: System info
• Proton version: Experimental

I confirm:

• [X] that I haven't found an existing compatibility report for this game.
• [X] that I have checked whether there are updates for my system available.

Symptoms

The game freezes on the loading screen systematically, only killing the process allows to exit it.

Reproduction

Launching the game from any config as everyone is reporting the game borked on ProtonDB

Launching it from the terminal with the following command:

flatpak run com.valvesoftware.Steam steam://rungameid/962130

Raises the following error:

[0522/091018.734:ERROR:mf_helpers.cc(12)] Error in dxva_video_decode_accelerator_win.cc on line 355

Unhandled Exception:
System.TypeLoadException: Could not load type of field 'SpeechSynthWrapper:_synthesizer' (4) due to: Could not load file or assembly 'System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
  at (wrapper native-to-managed) <Module>.CreateSpeechSynthesizer()
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeLoadException: Could not load type of field 'SpeechSynthWrapper:_synthesizer' (4) due to: Could not load file or assembly 'System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.