I saw that you've already encountered the same issue before: Core 0.20.0 sync stuck on a block, please help, has there been a fork?
On August 2 last year, experiencing the same issue twice is a bit concerning.

Are you perhaps using Debian OS? Because there was an old closed issue, but not closed because of a PR that fixed it, but for using par=1 to use only one thread for script verification that seems to effectively fix the issue.
Issue link: /bitcoin/bitcoin/issues/2726