Could really use a Gian hijack about now.....
But, in lieu of that -- when you see lots of strange stuff like warping attackers etc, pull up th emap, right clivk on it, and select net status. Odds are that you'll see a sawtooth tracing instead of a nice clean one. On my system, found that processes running in the background (notoriously, antivirus software and windows automatic updates) were consuming processor cycles and interrupting steady packet stream.