Happening to me too and I’m using a level with a minimum of assets, just a landscape, rvts to cap, and heightmesh.
My process has time on the CPU and the memory-pile changes over time which indicates it’s actually working on something, but I’ve waited ~10min a few times to make sure it’s not me.
It’s not, it’s the app. Just randomly freezes when I am dragging the viewport around the level…
This post suggests it’s a driver issue with 53x version game-ready drivers. They rolled back to 528.49 Studio Drivers and reported no more hangs. ref - UE 5.2 Editor freezing with DX12
I tried 528.02 Game Ready drivers since I would prefer those, but it still hanged. Will try around with various drivers to see if I can pin it down…
Also to note, this is a relatively new thing. My drivers haven’t been updated in many months (stable config!), only UE 5.2 has been patched most-recently…
Hopefully it doesn’t present in 5.3…