I can run Battlefield 3 at 30 fps, but minecraft AT ONLY 12?

I can run Battlefield 3 at 30 fps, but minecraft AT ONLY 12?

I'd recommend googling how to dedicate RAM to minecraft and see if that helps. Also one thing I know works for me and grand theft auto v is: ctrl+alt+delete>Task manager> right click minecraft>Click "Go to details">Right click minecraft.exe>"Set Priority" and click high. It takes a second but it may work.