Hey, since 2018-08-31, a real time kernel was added to the image, this is likely the cause for it failing on RPi2. Could you try running [Release] MODEP 2018-04-03 on RPi 2?
This would be the last thing for you to try out, I’ll try to get a RPi 2 myself some way to be able to fix the issue of latest images.
For USB sound cards you usually have to increase the buffer, try using -p 512 -n 3.
If that does not help, please start a new topic 