PCI Passthrough problems with audio card , Asus Strix Soar

[Doomster]

Hello everyone!
I successfully did PCI Passthrough of my audio pci card by IOMMU/DMAR ( Asus Strix Soar , that uses USB 3.0 controller: ASMedia Technology Inc. ASM1042A USB 3.0 Host Controller)
However , while using audio device on VM , card randomly stops to work , and after while turns up back . OS of VM is Windows 10 , audioplayer : foobar2000.
It shows error : unrecoverable playback error waiting for hardware timed out.
Also i must say , that pci device is alone in IOMMU group.

Does anyone have some idea how to resolve this problem?

 

[KevinS]

Check windows event viewer first to see what's happening, there should be an entry as soon as the error message appears.

 

[Doomster]

VM Windows eventhandler is clear. Trick is that i can still use my card without any issue on non virtual OS. But i need to use it by Guest OS , via PCI Passtrough. And i did it , but with PCI Passtrough card keeps loosing connection randomly ... On another server i have proxmox installed too , and i am using it with PCI Passtrough to get work with my Nvidia P100 without any kind of problem.

 

[Doomster]

One of walkthrough is using two different hdd/sdd and switching between them by efibootmgr. But for sure , PCI passthrough by Proxmox is become failed in this situation.

 

[Doomster]

Don't think wrong! Proxmox is so grate tool ! Graphic card PCI passtrough is working just brilliant , especially with NVIDIA GRID spoofing trick , but it completely fails when you try to work with PCI audio device.