We're seeing our Docker PostGIS database get corrupted periodically under 14.5. There's no official ARM image for PostGIS yet, so we're using the amd64 version. I can't say we've noticed a performance change in 14.5, but we've started seeing the corruption across multiple developer computers and the only common thread is that it's happening on computers that have upgraded to 14.5, but not on ones that are still on 14.4.