I was riding with a buddy last Saturday, he had a 1030+ and I had a 1040. I built a route that turned back over itself multiple times in a small area (so we could climb the same hill on 2 unique cobbled ascents and then descend on the gravel trails). He told me that I was gonna have to handle the routing on that spot because his would freak out. Sure enough, on the second ascent, with a different turn for a different descent, he informed me his was saying to take the first turn and the first descent…the 1040 was just fine. Anecdotal, but I’ve noticed several times that it handles these types of routes without any fuss.