People hate on this game so much for a bunch of reasons but especially the parkour but for me I feel like Ubisoft is finally taking a step in the right direction for the franchise. Great video!
The dives in the beginning few clips are more consistent and I did them by holding sprint and parkour up while in a place where I could do them (the position where I could consistently swing took a bit of playing around to figure out). The swing at 3:50 is actually the most inconsistent one. That feels like it happens at complete random. So basically swings are actually very inconsistent to get.