User blog comment:Alakar Voidus/Water glitch?/@comment-4085927-20111208035058/@comment-4085927-20111208042642

It could be the additional ram/video memory it needs for the new lighting effects they added to the game. Try changing your video settings to "retro", since it doesn't have the flash lighting. The other thing you can do is press F10 whist your playing and monitor the FPS and if it keeps dropping whilst your near liquids or mining under them, it will confirm its your system. It should stay around 60FPS.