Logic Studio apps Mainstage 2 with SL in 64 bit

Anyone successfully running Mainstage 2 in 64 bit WITHOUT audio dropouts, midi hangs etc...Oh and is anyone brave enough to use it with and M-audio interface? I've used Mainstage 1 in 10.5 with my ProFire 610 and there are glitches....wondering if version 2 is more stable...From the looks of the apple forum it's not, but thought I would ask here. Thanks!