@olivierlambert yes, passing both sound and VGA devices.

Does suspend work with PCI passthrough? It doesn't in other hypervisors, so I assumed it's a no-go. If it does - great, I'll give it a shot once I manage to pass through GPU.
As an alternative to the full passthrough, is there a compatibility list for vGPU compatibility? Would any AMD card work?

Re benchmarks - sure, I take it with a pinch of salt at this stage, it was more curiosity about missing write caching.

Could someone who tried Win11 with the latest XCP-ng beta confirm if hibernation works?

We're evaluating XCP-ng for running Windows VMs with GPU (AMD RX 6700 XT) passthrough. Using XCP-ng 8.3 beta 2 (iso that someone from Vates made in December), installed the most recent Win11 and got the Citrix drivers via Windows Update, plus installed the tools from Citrix website. So far, I observed a few issues.

1. GPU appears in Device Manager but doesn't work (Code 43 error).
2. powercfg /HIBERNATE ON reports "The system firmware does not support hibernation."
3. According to Nova bench, disk performance is ~60% lower than with other hypervisors on the same hardware (QEMU, VBox, ESXi, Hyper-V). While investigating this, I noticed that the disk device doesn't support "Enable write caching on the device" option, which, I suspect, could be causing the low benchmark number.

I didn't have those issues with QEMU/Proxmox on the same hardware.
Any ideas/hints much appreciated. Hardware is not set in stone, as long as there are guarantees to be working without issues and it's in roughly the same price category.