I've been getting the same problems with unsteady midi clock. For now, I have to trigger clips on my friends computer, from my ableton, to his resolume, via ethernet....but..... He has to have NO AUDIO because the sync is not perfect.
I cant wait for the day resolume can sync to another resolume, or to ableton, perfectly. I feel this is vital to the future or resolume, as AV performances and Jams are going to become for popular and if Max for live really does what it says it is going to do, that will all be on a steady ableton clock and ready for synchronization.
Is there are any chance the clock will improve? Untill then, I cant really jam out with my friend with loop based material and mashups and stuff. The only way I can jam out with him is by triggering "rubato" samples on top of this mashups. Maybe I am missing something. I would love to hear other thoughts about sync'ing with friends and jamming out in general with audio and video at the same time.