Hi @JohnDow ,
There are problems with the NEW for 5.5…0.preview Path tracing the code has been changed causing problems. There is not as much interest now the UE 5 EULA Licencing has started.
So far by volume 5.3 LGPU has been the most popular.
This probably wont be fixed for a few updates and currently LGPU is very unstable so MID 2025 seems realistic
The instructions have changed to
- DefaultEngine.ini file. Under the renderersettings category, add the following line:
“r.PathTracing.Experimental=True”- Reopen the project and change the viewport mode to Path Tracing.
- Open the console and enter “r.PathTracing.AdaptiveSampling 1” and press Enter.