Do you mind me asking you which distro you use? I've tried running BG3 on Linux Mint and I can't seem to get the game to ever load into the world. I get all the way to the in-game menu and into the loading screen after that and then it hangs and crashes. Every time. I've tried using a couple different versions of Proton, tried out a few different versions of Nvidia graphics drivers... No luck yet.
Edit: I'm very new to using Linux. Just wanted to clarify that.
I'm playing Hogwarts Legacy and needed to tune one system setting to fix occasional crashes. That's it, and that's the most trouble I've had in a few years.
Arch Linux already incremented vm.max count in a recent update, it seems fixed using these launch options: DXVK_MEMORY_LIMIT_MB=14384 PROTON_ENABLE_NVAPI=1 DXVK_ASYNC=1 PULSE_LATENCY_MSEC=30 gamemoderun %command%