FLstudio says it can't initialise the audio device at 44100hz when starting up.
I then realised it also grabs the mic, and at least on bose QC35s that means the headset switches over to HFP/HSP instead of A2DP ...
Studio One 3.2, (all x64) all yielding the same results.
Specs:
Win 10 x64
i7 6700k
16GB RAM DDR4/2400
250GB SSD/2TB HDD
See attached video for further information. My free screencap software doesn't record the cursor for some reason ...