My wife and I play an MMO and have become frustrated by increasingly common lag bursts. We have a Northern Virginia MDU fios internet installation.
The observables:
-6months+ ago our connection to this same server (Chicago datacenter) was smooth as silk. No issues.
-Typical latency is good (~50ms ping), but roughly every 30 seconds or so there is a lag burst that lasts 1-3 seconds.
-Other people on the server currently report no similar issues, leading me to believe that it's not a server problem.
-My wife is on a Mac, I'm on a PC, and our lag bursts are synchronized, leading me to believe it's not a problem at the OS/software level.
-Swapping out the Actiontech router for a different (linksys) router did not affect the behavior of the lag bursts, leading me to believe it's not a router configuration problem.
All these things seem to point to there being a problem the ISP service level.
Any ideas? Why has apparent performance degraded in recent months? What can I do to improve the experience?
Edit: forgot to add, this is a wired-only scenario, no wireless involved.