Well that has nothing to do with latency, that is just you cpu being too slow for all that musicmakin'power

latency is the time it takes between the sequencer giving the note on command and the device it goes to churning our the sound. With only one piece of gear, or only using your soundcard, high latency isn't really a problem, since all the tracks have the same latency. It is a problem when you try to play freejazz on your controller keyboard tho. You push a button and the sound comes out a second later