Not the “LetMeRepair” repair centre…
Based on the above someone could say that the issue is the mainboard and not the GPU.
A while back, I created this post and you could see that there are no reports similar to yours Framework 16 - RX 7700S questions so, definitely there’s something wrong with the laptop overall.
Personally, I’d ask for a new mainboard as we can clearly “see” that there’s an issue. I’d just go crazy if mine was doing that.
As I’m using Fusion360 and I’m always moving objects, that would drive me crazy.