Agreed, it’s good to optimize things, but when it comes to short game prototypes like games on game jams tend to be, there isn’t always extra time to tweak things so that they scale well to all ends 
This kind of thing wouldn’t probably be that big issue on regular game jams but I’d expect more visually heavy entries this time
Of course I’ll make sure my own entry runs well on my own hw which isn’t that high-end anymore (i5-3570k + GTX670), just wanted to make sure I don’t have to make extra effort for the lower end gear if there’s no benefit for it (I’d rather focus on the game itself).