Auto-fill seemed rigged.
Whenever I queue for support, my games are about 50/50. Some I win, some I lose. Whenever I get auto-filled as support, it's pretty much a guaranteed lost. It feels as if mmr is lopsided on the enemy team favour whenever you or your team mate gets autofilled. I'm not sure if I'm being confusing, but here's an example.
If I queue for support, and my mmr is 1200, my team's mmr would be around 1200 and the enemy would be 1200. If I get forced auto-filled as support, and my mmr is 1200. Then my team's mmr would either be 1100 or the enemy team would be 1300.
I don't see why people who are auto-filled should be placed on the team with a lower chance of winning.