For flute, it may depend on your audio settings, Sarah: one of our band plays whistle, and she was just cutting out all the time until we got her to adjust her settings - it made a huge difference: you need the following tweaks (if you haven't discovered them already!)
1. Click on Enable original sound (top left on a PC)
2. Go to audio settings (bottom left on a PC, open the menu next to the microphone icon) UNCLICK adjust volume automatically then set volume to near the right-hand end of the slider.
3. On that same screen, click on Advanced -it opens up a new screen: DISABLE the top two parameters to do with background noise, and leave the echo one as Auto. (drop-down menus)
Once you've done that, items 2 and 3 should stay the same for any subsequent sessions, tho you'll probably have to do 1. each time.
Pm me if you want details of any sessions in Scotland.