Totally know what you're talking about, some times I farm with a bunch of friends, imagine one room with 2 Void highlord, a light caster, a stonecrusher and 3 Glacial Berserker....

Unfortunately it doesn't matter if u have a super high-end PC or a potato one, the game will still run the same, have lag and do those annoying stuff because it uses flash player.

TBH I tried some bots a friend suggested for those annoying stuff, some of them had a hide player and disable animations buttons.

The Hide Players button had some cons, like if u logged out and in again it won't load anyone even you, becasue you prevent the loading players script for you too, so must turn it off before you log in again.

The Disable Animations button is so perfect for solving those issues. Ofc I wanna see my class's animations but more than 2~3 characters in the same room just ruins the game.

It's easy to add those buttons btw, you just prevent a script from loading on your screen, I would suggest the Disable Animations button too if AE would ever listen.