Run this tool when you have Cross open
http://www.thesycon.de/deu/latency_check.shtmlIt will show you whether you have a device or driver that may be giving you these "skips"
Every time the audio skips, if it is a device or driver causing it, you should see a red bar in the graph of the checker.
This would then indicate that you have a bad device/driver giving you this problem.
Ideally you need the bars to be in the green or yellow for good audio play back