Ray tracing is inherently "noisy" (grainy). The 0.36.1 update introduced more robust spatio-temporal filters, meaning the lighting stays stable even when you move the camera quickly. Key Features of the 0.36.1 Update
: Unlike standard screen-space ambient occlusion (SSAO), RTGI calculates how light bounces off surfaces, illuminating ceilings, walls, and pillars that would otherwise be dark. Hardware Independence reshade rtgi 0361 extra quality