I mean, it's been three months and the performance issues have only gotten worse. I actually upgraded my hardware between launch and recently, did a fresh Windows install even.

I'm lucky if I can finish a single hunt before I crash and lose all progress. This is even after Nvidia fixed their bad drivers.

The performance issues aren't just bad, they are obscenely bad. I would refund the game if I could, but I, too, thought the issues would be fixed in time and kept playing (back when I still could.)

No, putting in effort fixes the issues. If Capcom isn't willing to do that, those issues will remain. It's not a minor wound that will heal by itself, it's a specific problem that needs specific effort to fix.