Why is Path Tracing Mode not accumulating samples?

Development Rendering
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1

Hi,
I was trying out the Path Tracing in the Editor and can’t figure out why the Samples are not gathered. It is basically stuck at the first sample until I interact with the Engine window, which leads to another sample being processed. I also enabled “r.PathTracing.ProgressDisplay 1” through the console. but the bar is stuck at the first sample. I put an image which shows the bar stuck Thanks in advance.

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Greetings
Fabian

2

Well, i figured it out in the end. The geometry on this specific Meta Human “Hudson” was jiggling every frame which lead to the pathtracer always re-accumulating.