OP says "it takes 16 seconds to refresh the screen". At 0.0625 FPS, SPI bandwidth [0] is plenty fast with some to spare. [0] https://www.microchip.com/forums/

OP says "it takes 16 seconds to refresh the screen". At 0.0625 FPS, SPI bandwidth [0] is plenty fast with some to spare. [0] https://www.microchip.com/forums/m770156.aspx https://www.microchip.com/forums/m770156.aspx