DCing with spells

hey guys. i have a friend who cant play a disciple of magic, because everytime he casts a spell he DCs. Its mostly conjurer because thats what he got. if he tries to cure, he DCs. Happens on any server, he's tried it on a few different servers.

FUnnily enough his roommate has it too...is this an ISP issue? not sure how that works tbh

I typically crash the first time I cast a spell, every single time I restart my computer.

After that, it works like a charm.

Try, turning off all spell effects, then slowly turning them on (limited first, then full for yourself only, etc).