Switch lever on at the very top connected to Redstone and Redstone block with 4 dispensers filled with water game freezes

I have 7 of these contraptions all lined up on top of each other so that when I turn it on they all connect and work. Unfortunately as soon as I got done with the project I fill all my dispensers up with water go to the top and turn it on, the game freezes. Happens everytime. I built all the way down to bedrock, it is a slime farm I have worked on. I built another one on top of the surface to see if it would freeze my game but it doesn't so I have no idea what is going on. I'm upset because I have spent a lot of time working on this and now I can't use it. Please help me out