Extreme lag when loading new and old chunks and breaking blocks.

Even though not consistently, when breaking blocks my game completely froze for a little less than half a second. When loading new and old chunks, my game also had extreme lag spikes. Even more with f3 menu up. And odly enough, the game seemed to run better when I was recording with OBS. I am not sure what is going on here, but it seems like the new 3D biome thing is messing with the framerate. F3 menu stated it was using 81% memory if I remember correctly..