I have the very same situation with a Windows 11 VM 24H2
the VM has 2 vDisks with this configuration:
- virtio0 for C drive [size=60Gb,iothread=1,discard=on]
- virtio2 for general DATA [size=500Gb,iothread=1,discard=on,cache=writeback,backup=0]
- controller=VirtIO SCSI single
- Proxmox version...