It's looking like it's up to us the customers to figure this out. Helldivers has a lot of different issues, yours sounds worse than mine. But at least I can run it, you've got it much worse and that would drive me insane.
I get the freeze-on -exit crash, where if I try to quit the game normally it locks up but if I ALT+F4 it will quit as expected.
I'm not the only one either: https://steamcommunity.com/app/553850/discussions/1/4339851480049706181/
When I first got the game it didn't do this, and I was on Adrenalin 23.11.1, so a few days ago I thought I'd update in case that's what the game needed, but it didn't make any difference at all. So I think my issue is the devs fault, not AMD. My problems started around the beginning of May when an update came out.