Good afternoon @olivierlambert !)
Most likely caused by the virtual machine itself. Because all the other VMs were fine) and the VMs are all on the same disks. According to the load and smart physical disks, everything was normal.
Also, when restarting the problematic virtual machine, the problem did not disappear. We didn't want to recover from backup, because it would take a lot of time and it was decided to move the virtual machine to another physical disk.(After that, the VM load problem disappeared)