u/xXoverusedusernameXx

When launching Baldurs's Gate 3 on steam as is, no Larian launcher pops up. When forcing Proton-GE and passing [PROTON_ENABLE_WAYLAND=1 PROTON_ENABLE_HDR=1 %command%], the Larian launcher does pop up, HDR works, but my FPS drops by about 20% (GPU is NVIDIA). Looking at the store page for BG3, it doesn't look like it has a Linux native build.

Could someone explain what is going on under the hood?