Our typical set-up involves our drummer running our tracks. He has a mixer; tracks go from the iPad to his mixer. He gets a direct feed from the mixer with track and click to his IEMs and sends another line with the track to the board which feeds our IEM mixes. At our last gig we had to do something a little different. This resulted in him hearing both the direct feed and the feed that we get. He said he noticed a latency between the two. This is interesting as there are times when I know I am locked in with him (I watch his kick to verify) but I feel like I am off the track a hair. This is bothersome because I wonder how it comes across FOH. Anyone experience this? I suggested as a fix that both the click and track go to the board and he gets them back the same way that we do in our IEM mixes. That way we are all on the same feed. Thoughts?