incorrect. without oQueue, your battle.net connection is barely being used. it is very likely to be in a problem state, but you'd never know as you aren't using it.

the other addons you list are just stand alone. they are not networked across battle.net.

as for memory usage, oQueue memory usage is a factor of the number of existing premades and the garbage collector.

also, at the very top of your oQueue, what version does it say?