I had several roundabouts in my drive today. I wanted to see if FSD was having difficulty deciding how to negotiate them or was just being overly cautious in doing it. For two of the, I used a slight accelerator pressure to keep the car moving and it negotiated the roundabout perfectly. For the next two I allowed FSD beta control the progress. It accomplished the task, however it was very awkward and slow. Conclusion some of the poor performance is due to the car being overly cautious.