ESP32-S3 + ILI9488: prevent image drawing line-by-line

[gabrieledettorre]

Hi, I’m using an ESP32-S3 with a 320×480 ILI9488 display and the TFT_eSPI library.
When I draw an image (JPG) to the display, it appears from top to bottom, one line at a time.
I’d like the image to appear instantly, as if the whole frame is updated at once.

I’ve seen other users online who managed to display images instantly, but when I try their code it doesn’t work for me.
I suspect this might be related to my hardware setup.

Is there a way to make TFT_eSPI draw an image all at once, or at least reduce the visible top-to-bottom refresh effect?
Any tips would be appreciated.