Yeah I also had my first day on 10.11.2 today, and I was less than impressed. I suppose there were fewer whimsical hesitations and mailbox people, but way more random blinkers for no reason, and it really struggled to stay in the lane on any kind of curve in the road. Even on straight sections it was much more apt to swerve to one side of the lane or another based on nearby obstacles or oncoming cars, even if the oncoming cars were perfectly centered in their lane.
The blinkers were super annoying on curves in the road, but somewhat dangerous when it happened approaching intersections or forks in the road. The route plan had no correlation to the blinkers - sometimes it would signal left or right (or back and forth between them) when going straight, sometimes signaled right and got into left lane, etc. I was worried an aggressive driver behind me would maneuver into my space assuming I would go the direction my turn signal indicated, creating potential for a collision.
Hopefully this was just a bad day for it, and it was raining for most of my driving. I'm very disappointed so far after waiting ~2 months for any update at all, and honestly today's driving had a lot more issues than an average day on 10.10.2.