crashes all the time i move in my redstone world :(

I made a lot of restone contraption on my world which includes the useless lever, redstone elevator, piston escelator, etc. I was moving around the world to show my redstone piston creations to my cousin, but shortly after, my game crashes. This keeps happening when I move in my redstone world and I cannot enter it to show my redstone creations to my cousin. plz fix this so that I can show my creations to my cousin.