Is this a ZFS related problem?

Hello fellow Proxmox enjoyers, I have been running 3 Proxmox servers for a while now but having issues with IO pressure stalls and IO delay on two of my servers running ZFS. Almost every tutorial recommends using ZFS. I assume most home labbers run ZFS on consumer grade SSD's which is not recommended. The most recent server I setup uses LVM only and it seems like the IO pressure stall are better…