Known Issue in Unreal Engine 5.6 (Ray Traced Translucency)
As of Unreal Engine 5.6, ray traced translucency presents severe rendering issues, especially in scenes involving complex transparent materials such as liquids, glassware, and layered refraction.
Also, the post proccess volumes may cause some weird flash flickering when using multiples PPVs and even a single one.
Visual Artifacts Observed:
- Loss of material tint and color (e.g., beer appearing as water)
- Excessive blurring or fogging of translucent surfaces
- Inconsistent refraction and flickering
These issues are under discussion in community forums and may require a hotfix from Epic.
Recommended Workarounds:
- Use Screen Space Translucency instead (Project Settings > Rendering)
- Use the old version of ray tracing translucency
- Or run the project using Unreal Engine 5.5 for better stability