I'm getting some serious lag/delay when I zoom in and out of the timeline on multicam sequence: Nine cameras ex3. the longest sequence is 46min which I dont think is excessive. Machine is 2.66 Quad mac pro 4.1 with gt120 & gtx550ti. there is no lag on playback since I put in the 550ti so its not data rate/throughput. What is the problem?
Try a test sequence with three cameras. If no lag, then it's likely your system just can't handle nine cameras very well.