As mentioned the game would not run the second time. after some research online I found out deleting some cache files fixed this. However, they had to be deleted every time. Thus I wrote a script to do it for me.

The script:

• is executed with the before mentioned launch option.
• should be named runscript.sh
• should be made executable.
• should be placed in: the "Hogwarts Legacy" folder in your "steam Library".
• should contain: rm "$(printenv STEAM_COMPAT_DATA_PATH)/pfx/drive_c/ProgramData/Hogwarts Legacy/"*cache

This will delete the cache files on game startup and leave everything else as it is. And the game actually runs. c: