I use the zero latency mode (blue Z in interface) to monitor drums. Lately, it is not uncommon for the system to abruptly pop out of Z mode in the middle of playing, which is super annoying. Studio One shows the blue Z still, but from the sound it has obviously reverted to bare mikes (as though SO is not running at all and I'm just listening to the audio interface). What might cause this?

I'm using an 1824c. I posted on the relevant forum, but got no responses. I thought I'd try here before I hit up support.