The biscuit dude fails to show up at the end occasionally so you don't slide out for the 'bonus'. When this happens it's possible to run the panda position tracker well off the bar, even right off the game screen.
Fun, but annoying when you start to type one word and it insists you have to do a random different one first that starts with the same letter, which may be hidden from view. Also, the words should not be counted against you unless they have reached the bottom of your screen, not the ship itself (otherwise they should explode or give some other indication that they are no longer worth targeting).
It's strange. I have already optimized it and test on old Celeron laptop. What processor uses your PC?