so this is what Happened: So I Just Beat the Grumble Boss Fight *which if You Don't know It's really stupid Hard* and then after 3 doors It Does the Rush Earthquake thingy, So Then i Go to a Locker waiting for him but he doesn't come, Making me Think ''oh it was A Fake rush'' so then i walk away From the locker then i Start hearing him, i try and Go to the Locker i just walked away from, but For Some Reason, the game SLOWED ME DOWN and then Rush kills me. HOW IN THE WORLD CAN THAT HAPPEN.

I Think it was Lag even tho i Never came across it for the entire Gameplay but I Don't Know Any other Way It Could Happen.

Edit: Ok so i Just found out Yes it was crazy Lag From Loading the Sewers because i Use a PS4 Not a Pc