lag

Speed and responsiveness are always important to me on my forum. But I've noticed more than once my forum scrolls really choppily with a lot of lag. It's a fairly customized third-party style that is sadly no longer supported. AdminCP is very fast as is the default theme. What can I do? Is...

Hey I'm a moderator of a xenforo forum (this one) though not the licence-holder or anything. I was having problems with lag when typing, and myself and the owner discussed whether the amount of posts per thread page affected it (he had it on 50, then we changed it down to 20 and it felt to me...