send the image data to the matrix if zmq connect string is defined, but this falls a lot behind on the updates for some reason
even when limiting the update freq we still fall behind
analyze_audio does not complain about falling behind and the matrix follows the QT image just about as perfectly as I can see, but both have signigicant lag vs the audio
5 chunks should be 100ms of audio, but still it does not complain about falling behind even though the lag is clear
interesting that this worked before, still having lag though, maybe I should make it properly threaded