Just a quick tip to anyone using f.lux:
When your display starts to dim at night, you will experience some sudden stutter in your game every few seconds. Don’t worry about this, it isn’t a performance problem, just a side effect of f.lux adjusting the screen. I changed one line of code and my game started to freeze up, so I thought I’d share this to make sure no one else gets confused when their game seems to break.