I don't know exactly what is causing it but when ever I even look at my house in my world my fps goes from 130 to 1. Down below I have a picture of most of the things in my house. Also there are chest not rendering and I have been having the sign glitch where the signs change every time a log on.
MC-84702
Extreme Frame Drop
Resolved
Invalid
0
You've opened the world in 15w31a and bugged the signs. Remove the signs, which are the cause of the frame drop.