I did contact support starting with the very first thing being “I’ve tried the latest possible drivers”, and within 24 hours I was asked to update my drivers…sometimes, it feels like they don’t really read the contents of their tickets.
Sadly, there not much either of us can do other than keep submitting tickets and mentioning these issues until hopefully they’re acknowledged by 343i.
The performance of Halo Infinite on Polaris GPUs is so bad that I’d rather play it on my Xbox One S than my PC which is between the Xbox One X and Xbox Series S, more RAM than both, a CPU that’s about the same as the Series S (maybe slightly worse) when it comes to performance, and a GPU that’s faster than the Series S and a bit faster than the One X (and even with that being true, somehow the performance of this GPU is horrible in Infinite).