FW 16 LED Matrix Module FPS

I’m currently writing a scirpt for the LED matrix module and ive run into an FPS problem. whenever i stage the cols and then flush them i get like a max of 5-6 fps but whenever i just send a Black and white image, it can get closer to 60 -120, anyone know if there is a way get more than 6 fps as i would like to have gradient and brightness control for individual pixels