How to fix path tracing artifacts in Frostpunk 2?

The snowy night scene had terrible color overflow. I tried lowering Ray Tracing, which hurt quality. I used GamePP Shader Compilation Queue Manager to clear 5.2GB of cache and installed NVIDIA Studio Driver 560.94. RTSS showed frame generation time converging to 12-15ms, and AIDA64 kept VRAM usage stable at 10.8-12.5GB.