Reply to Weird Glitch?

I just got a new vci-100 SE everything appears to be working correctly, but sometimes if i push the echo / slice buttons traktor slightly flickers pausing the music a split second? I have not tried reinstalling traktor, but I was curios if anyone else is having this issue. FYI Audio Card not hooked up at time

Setup
MacBook Pro 15" i7
VCI-100 SE
Traktor Pro (Up to date)

Any advice is greatly appreciated.

Thanks