The side length slider changes the side lengths of the square when you slide it (wow) The stress test slider can be turned on in order to force the square to undergo a stress test which I believe best showcases the abilities of the machine NOTE: If you move the side length slider during an undergoing stress test, it will be added to the queue and will subsequently be shown once the stress test has been completed. The actual length shows the actual length of the square, as the side length slider is for the user interface rather than display.
This is an updated version of my Renderer V1 https://scratch.mit.edu/projects/837747572/ This version is much better, smoother, and much more friendly to photosensitive people. And unlike the original, the side length slider can be moved as fast as you want and it won't break the machine (At least as far as my tests have shown) If you find any bugs or have any suggestions for changes, don't be afraid to let me know in the comments