Nostalrius Begins - Quality wow vanilla realm (1.12)

So, i have started playing on the PVP realm first, my own latency fluctuates between 75-90 and i've always gotten slightly slow responses from the server which have made it feel like i was playing 200ms on retail.
I assumed the server was just like that and i just kept playing.

PVP server went down for a while so i decided to try out the PVE server for a while and what do you know, i have not experienced the slightest amount of lag or slowdowns of any kind.

I really don't want to play on a PVE server, and i am assuming both servers are hosted in the same space, so how comes the PVE server is so much better?
Is there something i can do from my end to make it better?

We are not online, so you must have been playing elsewhere.