Microphone & camera passthrough to Cloud PC from MacBook

I have a M1 MacBook Pro that I use to connect to my Cloud PC for work via the Microsoft App.

I try to use the Teams app installed locally on the Cloud PC for making and accepting calls but I am having a lot of audio issues.  First of all, the person I am calling sounds very tinny (kinda like a chipmunk!) and they cannot hear me.  Video doesn't seem to work properly either.  I have had very little luck with my external webcam (some Logitech one, don't actually know the model but I don't think it makes a difference? but it has a microphone).  There has the very odd few times that a call is working fine but then after a few seconds  or so, or when I start sharing my screen on the Cloud PC after a minute of the call starting, I start to experience the same issues with audio as explained above.

I am running Sequoia 15.6, the Mac Windows App is version 11.1.5 (2585).  Admittedly I've mostly tried in clamshell mode and connected to external earphones (AirPods Pro).

I used to use my earphones via the Citrix app on VDI with no issues previously.

Any solutions would be gratefully received.

Thank you