Racer

I didn't test rc1. I tested rc3, rc4 and rc5. On rc4 and rc5 it's definitely an issue. On rc3 I wasn't really aware of the problem. So I'm not sure whether it existed or not. Maybe I can rollback to test it.

I have the same problem with UNRAID v6.8 rc5 and before. I don't use plex, but all the shares become completely unresponsive when the mover is running. I have two Samsung 860 EVO 1TB in RAID 1 (btrfs) assigned to cache. Changing the priority in CA Mover Tuning to Low didn't change a thing. Iowait is really high. Up to 84 sometimes. Turbo write is disabled, but didn't make a difference when enabled.