Subtle cheating?

I was playing a game on DBD where I couldn’t catch this one survivor with bloodlust twice. I was chasing around a pile of snow near a gen. No matter what, I couldn’t catch him. He did not have sprint burst or lithe as he didn’t vault anything even at the end of the game as I checked perks. I’m wondering if anyone has experienced this before? I managed to get him down by my hatchet. I can’t think of any other perks that would do this? Allow a survivor to keep going even if the killer has bloodlust. (I do have a video, sadly it won’t let me upload it. So I’ve uploaded some gifs this was a few minutes looping around this gen..to see if he was cheating. I found it a little sus)

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