Effects when fighting bosses in group

Hey

I just wanted to ask if there's some sort of settings-tweaking that could improve my experience when fighting bosses in group.

When playing solo everything is more than fine but if I decide on some bosses to group up, I can barely see where the boss is in the room because of all the effects of the other players.
As an example yesterday on Balbala Act V, I was guessing in which general direction the boss is standing and the same happened for the Viper in Act 3 a few days before.
Apart from not doing as much damage as I could, I also die from silly stuff, because I could not see the boss swinging at me or even knowing that there's something bad under my feet.

Is there any advice you guys could give me?

Thanks