Location: MD, USA
ISP: Verizon FiOS
Occurs: Throughout day, but heavily during peak hours
Ref#: Pretty obvious it has nothing to do with my ISP, not wasting their/my time.

Same problem as EVERYONE else. Duty Finder/FATEs are the worst, but this is happening in solo quest duties or just when moving around zone. Everything in the game (other than my character) stops and after 3-5 seconds, warps around to catch back up.

664 players have a problem and, for the sake of player relations, having a little more info other than "investigating the issue" would go a long way. I don't think this is an unreasonable request, especially considering how much information in this and outside this post players have been feeding you.