Flickering inscriptions ST7796 stm32f411

[k008]

Hello, tell me why almost all fonts flicker on ST7796 stm32f411?
But it does not flicker if you use the font indicated by the number:
tft.drawString(String(0) + String(tm.Second), 380, 200, 6);

[Bodmer]

This is down to the redraw speed, fonts 2, 4, 6, 7 and 8 were created for the UNO and Mega so are optimised for speed using Run Length Encoding. Flicker is therefore minimised.

Sprite are the best way to avoid flicker.

The b

[Bodmer]

This library uses a neat trick to reduce flicker with the Adafruit Free Fonts:
https://github.com/KrisKasprzak/FlickerFreePrint

[k008]

What causes flickering?
What is the best way to use Sprite, for each group of captions or for the whole screen?
The screen size is 320x240, I want to display pictures of car icons on this screen and sign the values ​​(engine temperature, oil temperature, current time, air temperature in the car and outside, inclinometer)