15:57 seems very suspicious for a run that doesn't use any of the cuts and slowmo skips. He isn't even trying to be subtle about it, I can visibly see the ingame timer counting faster than the speedrun timer, and also sections that are supposed to have the same duration for everyone such as the time it takes after crossing a finish line to the end of Kiera's dialogue is significantly shorter.

Pro tip for future cheaters: disable your ingame timer and go for something less noticable than a 10% speedup. Pepega

the problem has been solved so this forum should probably not exist anymore. this is why my first post is not there