Speeding up the OLED?

[csconsulting]

I have made my own scrolling routine as the textbox scroll is a bit broken.

It however still takes some signficant time to draw onto the OLED.

Is there a way of running it a lower bit depth? I only need 2 colours, red and green, so if i could reduce the amount of data being written it would definitely speed it up.

I have also tried to speed up the SPI routines but that didnt work either.