Lag in TT, no lag in EJ

[Ruien]

Connecting from Asia (China). Connection has been stable all day through multiple zones (EC, WC, Kith, Neriak, DL, KC, EJ).

Upon zoning into TT from EJ, ping rises to 2000+ (in some cases 9000+) and I get disconnected. Logging in again into TT, I can move a few more feet before being disconnected again, lag is still terrible. Several attempts later, I'm able to zone back into EJ, and lag again disappears and everything is normal.

Skeptical, I tried this three times with the same results. I also reduced all graphics settings (and set clip plane slider to 0), with no effect. Time to /con self is primary measure of response time; in EJ it's quick and stable. In TT, it takes seconds or longer.

In short, what's different about EJ and TT? Is TT running on a different server than EJ? Is there a different network path / IP for that zone?

I may need to run wireshark to see if I can debug this, but hoping a dev knows the network topology and can identify this.