This is a photo of exactly the same gpx file loaded onto both my Edge 1000 (left) and Edge 1030 (right) devices. The scales have been made equivalent. I've made the mapping used (not sure if that matters) the same on both devices, so I cannot fathom why the newer unit should present such an abysmal quality profile of any upcoming hill. It is so bad as to render the screen close to useless. It often seems like I'm about to approach a wall, only to find it some 4% gradient. There must be a reason causing the difference, but I can't work out what. Anyone any ideas?