Jake
Please take a look at FAQs here:
viewtopic.php?f=21&t=90190 for detail that is useful to us when posting an issue.
For audio devices, please check a few possibilities:
a. do sample rates for your windows audio and your Resolve project settings match? are they both 48KHz for example?
b. Check for possible signal interference. You can find instruction lists from various manufacturers - e.g.
this from Sonyc. Bluetooth transmitters and/or headsets can have lower bandwidths (and hence can throttle easier) than plugged in monitors. You may wish to check with your manufacturer for both and see if that is a factor.
Regards
Shrinivas