Thanks for the reply, but as I stated previously these performance options haven’t helped much.
You stated that M2P is multi-threaded but didn’t answer the same question about LMS. Is it? And if so, then why is it that when I try to fling/scroll a long list of songs (~100,000) in Squeezer, one of the RPi3 cores goes to 100% and stays there for a long time while the other 3 cores sit idle, until the list finally finishes displaying? Sometimes the currently streaming music even stops during this wait, so that must be on the same thread too, right?