Razer Kiyo Pro Keeps Crashing

I recently bought a Razer Kiyo Pro, but have been experiencing lots of intermittent crashes. The camera is working fine, but then will freeze, and eventually will crash to a black screen. Whilst frozen, the camera does not respond to any requests to change settings; focus, light balance, etc. After this happens, only unplugging the webcam, waiting a minute, and then plugging it back in will restore it. As far as I can tell, the issue is related to the auto-focus - the crashes always seem to occur when the camera is refocusing itself. Issue has occurred using Zoom, OBS, and the native Windows Camera App. Firmware is up-to-date. I've experienced the problem both with Synapse installed and running, and with it uninstalled. I've tried updating and reinstalling drivers, but no joy. Please help - at the moment this £120 webcam is effectively an expensive piece of junk, as I can't use it without risking it completely freezing up.