The Witcher 4 - Official UE 5.6 Tech Demo (4K) | State of Unreal 2025

Check out this Unreal Engine 5.6 tech demo for The Witcher 4, running on PlayStation 5 with raytracing. This Witcher 4 tech demo shows off the new Fast Geometry Streaming Plugin to load open-worlds faster, and we see how UE 5.6 handles busy scenes full for high-fidelity character models and visual effects like ML Deformer. Additionally, we see Nanite Foliage in action, which provides a memory-efficient way to achieve high density (and fidelity) foliage, slated for release on UE 5.7.