It sounds strange that you have more luck syncing with Ableton. In theory, both should be crappy (I’m assuming that you’re running windows, which has never really been good at MIDI). I think the developers would like you to share more info about your particular setup 
As all sorts of things might influence the result, IMO the most important trick is to use an external sync source instead of an internal software-based one.
Also, on windows, sound-cards with WDM drivers should improve things considerably.
About The WDM MIDI Support On Windows: