(STM32H750 + SDRAM + NAND flash) => display stuck

[V.H]

Hello,

I used a 32MB SDRAM and a 1GB NAND flash, the size of LCD is 480 * 800, the images save as RGB888 and ARGB8888 format. The images data must copy from NAND to SDRAM when used.

I read all images data one screen used in setupScreen function when the screen was been activated. Because the data needs time to read, resulting in display stuck.

Is there any way to make the display smoother?