Hi, I have set up Raspbian Stretch with Desktop 2018-10-09, ran:
curl https://blokas.io/pisound/install.sh | sh to setup Pisound software
sudo pisound-config, installed Pure Data from additional software
sudo raspi-config to enable VNC in interfacing options
Connected via VNC, started a terminal window (so that the launch scripts detect the X display and PD window will pop up when launched), started the MiniMoog patch via the app (or you can run:
cd /usr/local/puredata-patches/MiniMoog/ && /usr/local/pisound-ctl/puredata/puredata_launch.sh minimoog.pd
to launch manually), played around with the keyboard in the app, the sound was just fine, no audio or scheduling errors were reported.
So the conclusion would be that this is not a software issue, it might be a problem in Raspberry Pi itself, the SD card, the power supply (if it’s insufficient, RPi may be unstable, ), or something else specific to your situation. Pisound is unlikely to cause this issue, as the execution is driven by Raspberry Pi.
Could you check the kernel log to see whether there’s any meaningful errors reported by running:
You may paste the contents here as well for us to take a look.