#10 Does not scale past 30 subwindows, but must scale past 1000

[BenRayfield]

There should never be more than around 30 subwindows on the screen at once, but it should be able to handle over 1000 subwindows not visibile on screen and only be ing considered in the neural-network and color algorithms.

As it is now, the off-screen subwindows slow it down the same as if they were on screen. Processing them separately should fix this.