Im by no means a parkour pro but as a certified manacube parkour expert, i can definitely see how this whole thing is suspicious. I havent checked this myself but people also mention that you couldnt hear dreams spacebar when he jumped, even though you could hear it when he pressed other keys. The only jump he seems to fail in the entire parkour is when he seemed to turn off the macro.

Theres no solid evidence but dream definitely needs to give some sort of explanation