Yeah, I did notice that there was some leeway into when the Neighbour notices but got the impression it was a bug. Maybe have the reaction cooldown be an icon or a sound 0.5 seconds before he turns? Or a sound cue? If you're not aiming for a purely diagetic experience that is.. if so maybe have him play a transitory animation during the reaction cooldown? I know that this is just a game jam but I'm just really curious, haha!
Oh, by 'the game slows down', I meant the gameplay, not lag. I feel like you have to wait a long time before the snow piling up becomes a threat so you're under no pressure to try and outsmart the Neighbour until later at which point it becomes a little boring. But I guess this would work as a more zen-like experience if that's what you were aiming for. I just kinda resonated with the arcade potential.
Edit: loved your moral drug game btw..