I take 5-20, I've been doing this for a long time now and have only recently had issues.
I'm not even a scumbag either, I took friends in when I was learning how to 20 box the LFR raids, I haven't wiped at all with the few pickups I use now.
I would even understand characters being ported when I'm 20 boxing, but it's only when I'm 5 boxing hah.

Oh well \o/