Windows 10 VM - Stuttering when reading/writing files

I'm experiencing a strange issue where transferring files within my Windows 10 VM from a Share causes the VM to stutter, meaning the cursor no longer moves smoothly and the entire OS is prone to freezing momentarily. When the file transfer finishes everything goes back to normal (working perfectly). My issue is related to this: but the whole system doesn't lock up, only the VM freezes/hangs. I've tried increasing "md_num_stripes" to 8192 (mentioned in the Ti

OK, I've installed another fresh Windows 10 VM using Q35-2.10 (instead of i440fx-2.10) and this is working fine. Unless the different machine type solved it, something is obviously incorrectly configured/broken on the other VM. File transfers from the array on the new VM are fast (100MB/s+) and most importantly it doesn't cause any hangs/stutters. Also audio has improved as I get no crackling now at all - at the moment everything is working perfectly. I'm not sure what's