DC during Sehk and Chaos Trials

I've tried to get my 4th Ascendency by myself, with a friend, with my guild. I ALWAYS DC during a boss fight. Most notably and recently while being immortal in the Sehk Trials on the last boss fight. He is almost finished, I DC, my friend gets his and I don't. Is this just my computer, my graphics settings or something or is anyone else having this issue still because I thought the DC stuff was addressed?

bump!. FIX the freaking DC problems. you already made POE 1 you know how this works