Leonid

Forgot to answer here, thank you for reminder. No, problem was not in High definition midi. Problem is that Mainstage is incorrectly working with threads(and mistankely calling them Cores). I have 4 cores with help of hyperthreading it means 8. And mainstage cannot handle it. The only normal number of threads it can use 6 and less. After it glitches stop, but its not funny not to be able use all power of apple macbook with apple program. Ive reported this bug to apple, no answer.

Tried everything, Even reinstall. Version 3.2 simply doesnt work. Shocked

For Choppin: no, only one instrument is running, buffer settings are fine and works with other programms(GarageBand). And problems are even if im pressing one note in tempo 80:) Joe Muscara, Its latest Macbook pro 15, so its i7, 16 gb ram, quite powerful. But thank you will check this thread as well. The cpu and memory load level is very low, eben not 20 percents

Would be very interesting, as I'm a bit confused, all review of mainstage are pointing it as reliable thing

Is anybody using Mainstage 3.2 with Casio Px5s? I'm experiecing strange glitches and pops during playing any instrument. Just trying out what could be the issue.