It took over a month but Microsoft has now confirmed what some Windows 11 users have already known since May’s Patch Tuesday update—there’s a File Explorer bug that is causing unusually high CPU utilization on some PC setups. On the bright side, it’s a very specific scenario in which the bug rears its ugly head, which may be why it took Microsoft

Source: Hot Hardware – Microsoft Finally Acknowledges A File Explorer Bug That Won’t Let Go Of Your CPU