So not entirely sure what to call it, but I've noticed the past few days/weeks that I've been having some issues whenever I get into a dungeon or raid. I'm not sure what the technical term for it is, but I noticed that everything will freeze for 1-2 seconds then snap back into action. I don't ever get DC'd but it's almost impossible to play a game when every 10 or so seconds everything freezes then goes back to being normal. This SEEMS limited to when I'm in dungeons and raids..I don't believe it happens elsewhere, or at least I haven't noticed it.

Is this a hardware issue? A connection issue? Any suggestions on ways to fix it? Any help or knowledge would be very much appreciated.

My OS: Windows 7 Professional with i7 Processor. 3.60 GHZ
16GB Ram of memory.

Internet: Comcast (Paying for their highest speed).
When I performed a speed test I got these results:
IPv4 Upload= 9.91MBPS Download=95.74MBPS
IPv6 Upload= 11.98MBPS Download=175.64MBPS