Teambuilder is buggy as hell

I absolutely love teambuilder, the fact that everyone gets to play the role and champion they WANT to play, making for really high quality games is a great idea.

I have this problem where after getting 5 people and searching for another group, the server will randomly disband the group. I don't know why it happens, maybe we're in queue for too long but there's no reason for us to have been disbanded... This has happened at least 3-4 times and it really turned me off from teambuilder and to just play YoloQ.