Unreal Engine Freeze/Not Responding when working with RVT

General Feedback & Requests
1

Unreal freezes when working with RVT.
When I open this drop down menu to assign RVT it feezes. Sometimes it would freeze when I do it in material (RVT Sample node). And I think it was few different ways it happens.
Here is an example;

mozlKHq
mozlKHq1021×1169 70.4 KB

I tried different new projects.
Reinstalling UE5.1 to different drives.
Different AMD 5700 XT drivers.

2

I may have found the cause.
If I have Runtime on in viewport and I open this dropdown my Unreal would freeze.
https://i.imgur.com/mozlKHq.png (or open this drop down window from material - runtime sample).
Any ideas?
Where can I report this to Epic?