Having played with this beta for an hour or so, my first impressions are that the mapping engine is a nice improvement. I have found a couple of points for discussion.

Having driven with it in the car last night for about 60 miles each direction, the screen redraw is noticeable slower than the previous release. I checked it in both directions just in case it was because that part of the chart hadn't been loaded before.

When the aircraft gets to the point where the screen redraws, it goes to a light blue screen with just the aircraft showing and then the chart appears. It doesn't take masses of time but the screen just shows the aircraft without chart for at least 5 seconds.

I have just tried two identical devices, one with the latest beta and the other with the previous release by swiping my finger accrooss the screen and the beta is definitely slower to redraw.

It's still a marvelous product though!