The display is controlled over an 8MHz spi bus, you can only write to it as a bitmap (no functions to draw stuff like lines or filled rectangles) you give a squ

The display is controlled over an 8MHz spi bus, you can only write to it as a bitmap (no functions to draw stuff like lines or filled rectangles) you give a square to draw in, and then a rectangle to bitmap to draw in the square. With the speed of the spi bus, the max speed you'll be able to update the entire display at is 8fps.