The Witcher 3 Remastered's demanding path tracing feature is being optimized by a free mod that recovers up to 30% performance indoors with minimal visual loss by reducing light bounces and lightening ray tracing effects. The mod, created by Hourlines on Nexus Mods, achieves the largest gains indoors where path tracing is slowest, with trade-offs including slightly darker corners and slower global illumination response.