It fluctuates. Sometimes its fine and other times it's laggy. I remember it used to be a lot worse the first few months I was here but the speed has improved thankfully though it does have its days. Maybe when the forum is slow it's getting ddosed or something.
Before the last big DDos the forum was running pretty well and the only times it didnt it was because it was down, totally. After that ddos i have experienced a lot of ''lag'' specially on my phone (i dont know if its a coincidence) sometimes i go to ''x'' section and it takes minutes to load but it doesnt give any error.