Apologies for the late response here...

I am still having this issue though. The most frustrating part of this is that I'm not sure if it's my connection, the games servers, or how to test it. I've talked to several people on this issue, and the vast majority report they've noticed mini spikes like this in their own gameplay experiences, but very few claim to have it lay seige to their experience like it does to mine.

It has been making combat rather unenjoyable for me as of late. Do developers / admins ever respond to these threads? Is there anyway I can run some tests to track down exactly what is happening here and attempt to prevent it?