Hey @antokhio ,
thanks totally forgot about TodoMap! Sadly i cant really use it since im parsing my midi Button Layout from an excel file.
So i think ive found another possible issue with the APC Mini. Basically everytime i move a few slider at the same time, while updating the LED lights on the controller, it crashes.
So ive added some logic to check for buffer Overflow before sending out Midi to the LEDs.
ive also replaced the MidiSysEx Out with MidiSHortOut nodes.
I currently cant get it to crash this way, It still feels kind of unsafe for production. I guess the controller crashes when it sends/receives to much at the same time, but thats just a guess from testing.