Low Queue Inconsistency

So I dc'd during a norm match. Managed to come back and play and still help my team win the game (yay!). The next game I go to play I and up with being on low priority queue for 5 mins. I get it. Wait my time out, play with no further issues. Nbd. The next game the LPQ was gone and I queued up like nornal, so I figured it was dealt with. (again, no issues that game).

So I take a break, have a bite to eat, etc... Come back and now my last 2 games have been LPQ again?

That doesn't seem right.

Any ideas why it would go away then come back again?