the idea behind having what 4 dedicated chat rooms is that each one is meant for something different. Say coffeehouse where most ppl are is meant for non MH dicussion and easygoing chat. In ES you are more apt to seek support and Adult more grown up discussion that some members don't want to take part in. The auditorium is self explanatory . Each room all 4 of them has the intent stated when they are used correctly things will probably go along easy, we don't have to have big numbers in rooms for them to work as intended.
I have the same concerns you do about chat freezing and dropping, reloading etc. but i think it is slightly better than the early days.
thanks be well,
tams