upgrade 6.1

Hello folks, I keep putting off posting this but I'm looking for some advise on upgrading from PVE5.4-13 to PVE6.x I'm running a 3-5 node cluster where 3 nodes are all flash CEPH backed machines and another two machines are non-ceph game server hosting machines. The CEPH machines communicate...

I did the upgrade without problems from 5 to 6.1 No change in my Node and LXC Container. But the CPU load in summary of the node jumps every 2-3 sec to 90%. See picture attached. If I look on the lxc container on there own, there is no container which such a high cpu load.