I ran some more tests. Removing all groups and layers made the process as fast as it was without the Icon Composer icon. Simplifying the .svg files slightly increased the speed (3.5 minutes instead of 5 minutes). Using .png files instead of .svg gave me the same results (3.5 minutes). In fact, I was using four groups with one layer each. Using only two groups (the first with one layer and the second with three), I managed to compile in 2 minutes and 15 seconds (using the simplified .svg files). @Glazier Sincerely, I don't know how to extract useful information about this issue from the sample utility output. Can you give me some tips?

Hi Ed, I added a simple project on GitHub to test the MKScaleView's behaviour; it is available here: https://github.com/asclepix/MapTest.git. I noticed that if the zooming-in starts from a not so small-scale (for example 1:25.000, "Zoom Out" button in the sample), the Zoom In finishes with the right scale. If the zooming-in starts from a smaller scale ("World Zoom") the final scale is usually not the right one. By the way, using the iOS 18 simulator, the large scale map has a red background, while it is not the case on simulators of older operating systems or on a real device with iOS 18.

Hi Ed, thank you for your answer. I tried to specify the view of the map through an MKCoordinateRegion, and I often get the same problem (but not always). When I zoom in from a large area (say 150km per cm scale) to my small region of interest, the scale says it is 2cm to 2.5km, but if I pan around a little, the scale immediately changes to 2cm to 1.25km. It seems to me that the scale doesn't adapt to the last zoom. In fact, if I disable the animation, when I zoom in to the small region area the map scale remains at the initial value. let mapRegion = MKCoordinateRegion( center: annotation.coordinate, span: MKCoordinateSpan(latitudeDelta: 0.05, longitudeDelta: 0.05) ) setRegion(mapRegion, animated: true) The situation improves with MKMapCamera: the scale is correct after zooming, but it only changes if I use animation. let placemark = MKPlacemark(coordinate: annotation.coordinate) let mapItem = MKMapItem(placemark: placemark) let camera = MKMapCamera( lookingAt: mapItem, forViewSize: CGSize( width: HALF_MAP_SIDE_MULTIPLIER * 2.0 * METERS_PER_MILE, height: HALF_MAP_SIDE_MULTIPLIER * 2.0 * METERS_PER_MILE ), allowPitch: false ) setCamera(camera, animated: true)