Minecraft doesn't do things anymore

Since some hours, one of my minecraft world doesn't do anything anymore for some minutes, then it works properly for some seconds. These are the symptoms:
-animals/villager etc. dont move
-frame rate drops
-game doesn't save
-mined blocks dont drop entity-blocks and appear back after some seconds
-sometime you get teleportet to a location you were seconds ago (happens together with block re-placing)

It kinda feels like the game stops for some seconds (you can walk around and place blocks) and then renders everything in 1 second (like damage or mob spwaning/block placing)

I had this issue in the same world before in, i think 1.4 or so. I edited the level.dat and set time to 0, aswell as daytime, lastplayed etc. (everything with time). But this time this doesn't work.

It only affects one world.

EDIT1: I forgot; i also tried to get it running properly with a completly new level.dat. (is edited seed etc.). Before the bug appeared, i oppened the world in the snapshot 13w16a.