Hi, my 2 mac are connected using gigbit cable together.

Ve Pro, connected successfully , no sound, however when you play the session , there is sound with misc notes sound together! And The Play/Stop button is always gold....I used to meet this problem using a 10/100M cable, so I think it's a cable problem then i replace it into a gigbit cable Cat6+ cable. But today I still met this and after I replaced with another gigbit cable cat6 one, it's the same!! Looks like a latency problem . Help!