Surely case of double buffer even when it has print-lootins, which does not matter for screen-refresh.
https://www.collinsdictionary.com/dictionary/english/flash
flash :
A flash is a sudden burst of light or of something shiny or bright.
blink :
1. When you blink or when you blink your eyes, you shut your eyes and very quickly open them again.
2. When a light blinks, it flashes on and off.
flicker :
If a light or flame flickers, it shines unsteadily.
I'm pleasure if you download the below.
https://github.com/WaitrudWeber/source_zip/blob/master/display-20190403.zip
Please reffer to the below for compilation.
https://waitrudweber.hatenablog.com/entry/2018/05/01/005938
it refleshes steadily and stable.
https://github.com/WaitrudWeber/source_zip/blob/master/display-20190403.zip
