ILI9341 can work at 80Mhz SPI speeds. I've made it using ESP8266 running @160Mhz and SPI @80Mhz. But you need to use short wires (10cm will work) or else high frequency signal requirements will come into play. @80Mhz SPI you'll get around 60fps which is very fast :) I've tried to replicate this on E...

Oh, ok.
Thanks, I'll do that.

I might give it a shot on tracing that myself too.
This code might give a clue on what might be the problem : https://github.com/espressif/esp32-nese ... /spi_lcd.c
It can set the speed to 80Mhz apparently.

I'm connecting a ILI9341 to VSPI using the assigned pins.
How can I get it to work at 80Mhz?
I'm using arduino core and I'm only getting 40Mhz but from what I read it can go up to 80Mhz if not using GPIO-matrix-routed pins which I'm not.