MC24 seems at least as stable as MC 22 for me so far. In fact no screen freezes at all. The MC22 interfaces still froze for me occasionally, mostly when flitting about with the Bluetooth trackpad. Does the music keep playing when it freezes for you?
I long ago abandoned the little dual spectrum analyzer to reduce cpu and get slightly better sound quality. Turning them back on increases cpu from about 3-6% up to 7-10%, 2102 mac mini i5 w/10GB.
MC23 and MC 24 both have higher cpu then MC22, and MC22 sounds better. This is true for windows and mac. Would love to see some progress on this.