DXVK_USE_PIPECOMPILER
DXVK_USE_PIPECOMPILER appears in 4 issue threads across the Proton, DXVK, vkd3d-proton and Steam trackers. The values people posted, and the games they posted them for, are listed below.
__GL_SHADER_DISK_CACHE
__GL_SHADER_DISK_CACHE_PATH
ENABLE_VKBASALT
__NV_PRIME_RENDER_OFFLOAD
WINEESYNC