FV is the highest populated server, almost always at high population, so during peak play times it's probably gonna always be bad unless they put a queue on it or something
It has also been stated, for several years, that beta runs on the FV server -- as the lag becomes dramatically worse in November-December-January when the beta server is being updated daily and used for testing purposes. We were not seeing 2 straight weeks of 5 minute zone times, 30 second delays on a single parcel, bazaar searches not completing, tell and say and group chat delays, and so on, back in October.
