Can confirm @hhoehle's observation.
Proxmox 7.1.10 (yes i know, thats not the most recent one, but this is just a test system)
Windows Server 2022 VM with VirtIO-Block Disk crashes under CrystalDiskMark. (OOM in syslog)
Changed cache from default to write back and no more crashes.
VM disk and Proxmox are on two different zfs pools
Proxmox 7.1.10 (yes i know, thats not the most recent one, but this is just a test system)
Windows Server 2022 VM with VirtIO-Block Disk crashes under CrystalDiskMark. (OOM in syslog)
Changed cache from default to write back and no more crashes.
VM disk and Proxmox are on two different zfs pools