With a cheap HDMI capture card you can use your iPad Pro M4 to play in a bigger screen
It’s messy, but it works. I had seen before there was ways to use your iPad as a display and wanted to try it out with my RP5. I used a cheap HDMI capture dongle (Guermok video card from Amazon), HDMI cable, and an HDMI to USB-C dongle to make the connection. For the app I used Camo Studio (free).
It’s nice to be able to play on a bigger display like M4 iPad Pro since it has an OLED display. I’m not technical enough so I don’t know if it upscales to a higher resolution. Side note: I forgot to turn off the RP5 screen when docked when I took the picture , so that’s why it’s still on and mirroring.
Hopefully this is useful for someone 😄.