I have noticed the large geofence size (maybe it was like this since some time already) and the grace period, but I didn’t change anything so far. I 'll set to 200m and see if this has effects to the ones coming by car. For pedestrians, 100m is sufficient, I don’t see a need to change.
By the way, if I increase the geofence to 200m, then it means also that the AU activates only once I leave the 200m area, right?
Other than that, no negative effects observed with the latest release.