This is the same kind of finger pointing that was going on with Path Tracing freezing and crashing in Unreal when using Radeon GPUs. AMD kept saying to just contact Epic about it, which got really annoying after a while because nobody was having any issues with Nvidia cards.
So much back and forth eventually lead to me just purchasing an RTX 3060 and being done with it. All of my problems were immediately solved following that, and I regretted all the productive time wasted trying to figure all of that out.
A pal of mine is currently having the same issues, and they just so happen to be using a Radeon 6800 series also. A lot of it has to do with the AMD drivers, and I recall my Radeon card breaking on every new UE5 release since 5.1. So yeah, this has been a problem for a very long time, and there are many complaints about it on AMD website, but unfortunately a lot of these things never get resolved.