I haven't had half as many issues, but it might have to do with the fact that me and my sam friend know how to play our classes properly, and we've been farming together.
We've had a healer or a tank here or there who didn't do as well as we'd hoped, but we've been pulling through pretty well. Probably helps we aren't farming it 24/7, that would get boring fast.

I was lucky to get a mount drop, my friend is sitting on 42 tokens so he's not far off now.