I was able to tweak the config a bit and got considerable better results without any reported XRUNS and I couldn’t hear any glitches /for the test patch/:
threadCount=3 (from:2), realTime=true (from:off), sampleRate=32000 (unchanged)
4 threads works as well, but this makes the zynthian very unresponsive in turning nobs, using the webconfig etc so this is certainly not a good option.
There are a few cracks only in the first recording, not live which I suspect are from the volume going in the “red” zone on the first recording, but I didn’t find a way to easily tune down the volume from the Zynthian for this layer.
Modified /zynthian/zynthian-sw/vcvrack.raspbian-v1/settings.json
settings.json (587 Bytes)
Sample music from generative-01 patch, recorded with the Zynthian Audio Recorder 
And here is another generative sonaremin patch:
It appears that recording with the vcv-recorder component would also be a possibility, this renders out the video and audio of the patch glitchfree even if there are audible glitches and xruns, but would obviously use cpu as well, in turn increasing the chances of real-time audible glitches.
I’ve come across some interactive patches as well responding to notes from Midi Channel 1.