Is this really all that important? There are 3 other cars ahead of the Tesla at this red light intersection. If you're able to react within tens or hundreds of milliseconds to a changing environment, it would actually make sense to reduce compute to save power for when the vehicle is in motion and not surrounded by other vehicles at a stop light.
Edit: It seemed to handle that intersection just fine, but a couple of turns down it ends up on the wrong side of the road, which is quite bad. That said, what proof do you have that Waymo/Cruise would be any better at this?