I'm trying to fix one of the last issues with my VFIO setup and I don't know what to do. The audio slightly but noticeably skips every 5 seconds or so regardless of what I'm doing in Windows. I've disabled timer-based scheduling in PulseAudio but haven't tried much else. I read there's some part of Intel-IOMMU you can disable on startup but I didn't see anything about AMD. I mainly used Virtual Machine Manager to get it set up. My system is:

• AMD Ryzen 7 1800x
  
• GTX 1080ti x2
• Asus 370-PRO
• 32gb
• Running Arch, QEMU/KVM

Here's my core pin config:

<cputune>$
  <vcpupin vcpu='0' cpuset='1'/>$
  <vcpupin vcpu='1' cpuset='3'/>$
  <vcpupin vcpu='2' cpuset='5'/>$
  <vcpupin vcpu='3' cpuset='7'/>$
  <vcpupin vcpu='4' cpuset='9'/>$
  <vcpupin vcpu='5' cpuset='11'/>$
  <vcpupin vcpu='6' cpuset='13'/>$
  <vcpupin vcpu='7' cpuset='15'/>$
</cputune>$
<cpu>$
  <topology sockets='1' cores='8' threads='1'/>$
</cpu>$

I have given the VM 16gb, successfully passed 1 GPU to the VM, attempted to pin the CPU cores so that the guest got 1 thread on each core, not sure if it actually worked (how do I check this? windows is reporting 8 VPUs and I think that's right but the virsh parser was throwing a syntax fit so idk). Audio is connected via USB on Arch. I tried using the ac97 sound device but it was really nasty sounding. I got the best performance with ich9 but this issue still exists. Please help!