The way objects jump towards you when you pick them up makes it basically impossible to stack them properly. It also makes it really hard to use the boxes (which are a cool feature btw.) I'd suggest removing this, it's not that important :D
Also, after looking at the furnace it takes waay too long to "readjust" to the surrounding light level, it's really annoying to not see anything for half a minute everytime you check your ingots.