Game freezes and crashes when messing with settings

So I don't know if this just for the one world that I've been playing in, but today the world has crashed and froze on me 4 times! And all I did was adjust the settings like whether I'm in creative or survival mode, or if I want to change the time from day to night. This should not be a problem. Now I am using the Festive Mashup 2016 resource pack in this world. Either way this should not be a problem. Also it's been acting up like this today all of a sudden. I think the latest update made this worse.