I have NFL DirecTicket, so I get to watch many/most of the teams. I don't get to spend too much time watching each team. But, I will say the following.
1. The Rams VERY rarely seem to create a nice pocket, they are the worst I have seen
2. The Rams time to throw per play has to be last in the NFL
3. The Rams look far and away like the WORST run blocking OL I have seen, they get zero push
I cannot prove these observations, obviously. They are just my opinion. The Rams OL woes have been present for many years. Their OL never seem to improve.