Microsoft issues emergency update to fix game performance problems caused by KB5000842 and KB5001330
Microsoft has acknowledged that "a small subset of users have reported lower than expected performance in games" after installing one of two recent Windows 10 updates, and issued a rare type of fix.
Gamers complained about dropped framerates and poor performance after installing the KB5001330 update, and the same report came from those who installed the preview version of the same update, KB5000842. Now the company is using a fairly uncommon Known Issue Rollback (KIR) to resolve the problems, just after NVIDIA issued advice of its own to affected gamers.