Yes, i've experienced the same thing. when i first began to really use the PT midi side of things. Whether using General Midi or not you should Go into your preferences and use the midi offset feature. For a session with a buffer of 1024, you'll be putting a number in the region of (minus) - 3453. It is affected by how you route your midi gear into PT, plugins, gear latency, and probably a few other factors too.