How to change server?

[Jeeqbit]

You can change server for free using the World Visit System. Just click an aetheryte at one of the starting cities and you can change server. This will not affect queue times because the queues draw from across the data center.

You have to pay to change data center, but it probably won't affect queue times unless the data center is in a different region. The queue times get slower when everyone from that region is sleeping.

When I went through the story it took me 40 minutes (on a tank) for every trial, but you only have to suffer that while going through the story and then it's not much of a problem again.

the party finder it's empty aside from 3 or 4 people promoting their house parties (i dont even saw one single party for high level stuff).

You actually cannot see parties for content you have not unlocked, so it's just that they are all hidden. There are not very many when people are sleeping either, so it depends on the time as well, in the evening hours it can be over 100.

You can create your own recruitment in party finder though, just select the thing you want help with and say it's your first time bonus.