Waymos are terrible at taking unprotected left turns into bumper to bumper traffic during peak hour.

They aren't aggressive like a normal driver when traffic is stopped and there's a clear but small gap that would result in the car being at an angle crossing traffic.

The lidar can't see any gap between cars when trying to turn into a more distant lane, so any obstruction to a close lane due to traffic kills them.

Source: been stuck in and observed Waymo in this situation for 10+ minutes several times.

A human driver is willing to make the turn much sooner.

Don't take a Waymo if you're in a hurry and the route will have such a left turns.