Fast Refresh under Zephyr/Nordic

Description

fast refresh under zephyr/nordic nrf52840

“cheap 2.13 inch e-paper Display, 1.5s fast update 250x122 GDEY0213B74
This 2.13 inch e ink display is very cheap, 250x122, SSD1680Z, SPI 4 grayscale, partial refresh and 1.5s fast refresh.”

What MCU/Processor/Board and compiler are you using?

nrf52840

What do you want to achieve?

get rid of the (3?) flashes between screen updates

What have you tried so far?

can’t find any way to change from the default method of updating the screen, which appears to update the entire screen and flashes multiple times (3 sec) update? Any hints/advice would be appreciated.