Metronome skipping

I am new to Cubase and not as knowledgeable as most. Just put a vocal track to put new music on the Cubase LE7 with the Steinberg UR44. I can play the track fine but when I put the metronome on it skips every fews bars. Very annoying. Does anyone how to fix that? Thanks!
I am forced to use my Roland VS 1880 recorder to record to and then upload to Cubase. Very time consuming but better than working with a non functioning click track. Please someone anyone Help!