Maintenance for the week of November 25:
• [COMPLETE] Xbox: NA and EU megaservers for maintenance – November 27, 6:00AM EST (11:00 UTC) - 9:00AM EST (14:00 UTC)
• [COMPLETE] PlayStation®: NA and EU megaservers for maintenance – November 27, 6:00AM EST (11:00 UTC) - 9:00AM EST (14:00 UTC)
If you've already went through the basic connection troubleshooting found here and still encounter latency, the next thing you can do is open a ticket with customer support.
The lag is getting worse everywhere now... especially in the original start areas (Khenarthi, Stros M'Kai, Betnikh, Bleakrock and Bal Foyen). It does get noticeably worse during Events (and when those annoying farming bots are around) - presumably because there are a lot more people on - not only in the Event area, but because there's an increase in people duelling around Wayshrines. Honestly, you really need to remove duelling from PvE areas, I'm not joking!