Low prio queue + client disconnects

I have a problem that's causing quite some irritation.

My pc's died a coupple of times while in loading screen for games, causing the game to be remade and me to get AFK-status resulting in low prio queue with 20 min wait-time.

Now, I know I have to play 5 games without DC'ing and all that to remove this but my problem is with the lol client. After waiting for 20 minutes, about 50% of the time the client will dissconnect (without any aparent reason) and I'll have to wait the ENTIRE 20 mitues AGAIN. As in I dont get any "match ready" it just says "client trying to reconnect" and brings me back to lobby once it does.

Nothing is wrong with my net / connection. Everything else works fine without any disconnection. So im sure its the client.

Please. This is getting reaally frustrating

Thanks