I could reproduce this issue on linux by enabling audio power management:
echo '1' > '/sys/module/snd_hda_intel/parameters/power_save'
So I suspect the Realtek driver under Windows is trying to enable power management too. You might be able to check if that’s the case by not letting the sound chip sleep (when playing audio it should go away and only come back a few seconds after stopping).
I haven’t looked into it that much, but this might help you if that’s the problem:
Basically you would need to disable power management by finding the options for it the registry. It might be in HKEY_CURRENT_USER\Software\Realtek\Audio\RtkNGUI64\PowerMgnt or HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\xxxx\yyyy\