all my entities crashed after using a randomtickspeed command (which didn't work)

I changed the RandomTickSpeed dramatically, and the animals I had around me stopped moving, and they didn't fall when I dug the blocks under them. they still moved horizontally when I pushed them. The RandomTickSpeed command seemed to have zero effect. when I loaded a bow, it simply went back down without shooting. same thing with a crossbow, both the arrow and firework types. At the moment, my minecraft screen is saving the world I was in after I saved and quit. It's been saving the world for hours, and I can't ex out the window. Unfortunately, have no pictures for you guys. (I've made the tick speed far over this number before, and nothing happened on any of those times except this one. I have a pretty good computer, so I think it has to do with the game, and not with the computer.).

me from tomorrow here, I went back in. it seems that when I place beds, they only place their bottom half, just like what happens with the /setblock command. and commands do not work.

oh, and I just saved and quit again. the screen's still not loading, and I can't ex it out.