[PROBLEM] PEQ + certain tracks = crash

[Nutul]

Could be that the zero just isn't powerful enough to do PEQ.  Try monitoring with htop while it is playing, I'd wager something (cpu or memory or both) are getting maxxed.

Memory is my first take...
The fact that it happens "on certain tracks", maybe those tracks are long (e.g. big in size) and go OOM... still a wide guess, this of mine, but seems reasonable.