Important: Restart Your Studio Display
Posting this to safe other studio display users a lot of time and hassle. YOU HAVE TO RESTART your studio display on occasion, especially if you run into issues with the3 camera, microphone or speakers. The studio display runs its own internal version of IOS that operates the camera, speakers and microphone. Much like ANY other device that runs its own operating system, you can't run it indefinitely without ever restarting it. You will eventually run into issues and your device does funny stuff. I got my studio display on march 18th and yesterday the camera started acting up, then the microphone etc. After hours with Apple support and trying all kind of things to isolate the issue, it occurred to me that we did EVERYTHING except restart/reboot the display itself. because it has no power button and no software control to restart it, the only way to do it is to unplug it from the power source, wait at least 1 full minute and plug it back in. Of course it immediately solved all the issues. So if your display - or for that matter any of your other devices - starts acting up. Restart it that way to see if the issue resolves. Apple: please implement a firmware update that allows for rebooting the display via system preferences rather than having to crawl ion the floor find the plug, unplug it, wait, plug it back in.