I responded to this same issue an another thread. I’ll paste my experience:
I’ve noticed over the last few weeks that if im in queue, i get dc’d after one hour EXACTLY, every time. Even if im not really afk.
My experience is that when i queue for an AV game, i usually find a quiet spot in Org and keep the volume up so i can hear it pop.
If i move the character a little bit every so often, i i still get dc’d after exactly one hour. I actually have to interact with things. So i decided to go to a vendor at about the 55 minute mark and rebuy something and vendor it again. Didnt get dc’d at the hour mark.
Theres been times i’ve been at 59 minutes and i’ll go for a ride to the AH and get dc’d while riding. Its one hour unless you interact with something. At least thats what happens to me.
Im not complaining one bit about the long queues. I level my alliance rogue while in queue. Its just been something i noticed and figured out what to do.