Ray Tracing and Path Tracing in
#PhantomBladeZero.
Ray Tracing enables RT Shadows and Reflections, while Path Tracing adds RT Global Illumination and Caustics. though caustics effects are visible on some water surfaces even without RT or PT.
As expected, both Ray Tracing and Path Tracing are quite demanding. Surprisingly, the performance difference between them is quite small, but the main issue is the additional traversal stuttering and hitching they introduce.