Didn’t watch the game only highlights

We are not far away enough from the horrific defenses we had (with Dennis Allen running the secondary and "assistant DC" yet to be sure it's Robinson himself or what he is being asked to do. He was doing a decent job last year before going down, I thought.

Lots of players looked lost here and went to contribute solidly elsewhere between 2012 and 2016.
The defense settled in last year and ended up playing well down the stretch, but you're right that under DA we retain the unnerving ability (if that's the right word) to give up big plays in the run and pass game at any moment. I do not understand why we lack consistency. I also have to admit that DBs like Robinson and Malcolm Jenkins who played but under-performed for DA have gone on to play much better with other teams.