Maybe he completed it?
Or that it's way to much lag for him.
FTB Departed is good.
Ours has alot of mobs, tons of new ores, weapons with unique stats and has IC2, Mekanism, and Thermal Expansion on our pack, and a good mix of magic too.
That's the forum page, the server's pretty barebones but a playerbase helps! Finding bugs will be essential.
What's the problem?