I'm using it on one of the Pro XDR displays, and it's quite impressive for the cheapest notebook to drive this monster of a pixel-wielding behemoth with zero issues or complaints...
(2732*2048 + 2560*1600 + 6016*3384 = 30,000,000 pixels, although I'm not sure if the iPad receives a pixel signal, or renders its own content)
So it doesn't seem to be a lack of graphics power that causes this limitation.
(Incidentally, the XDR and current-gen iPad pro displays are the first where I get the illusion, when watching high-res video, that there's an actual window in the display and I am looking at a real scene behind it)
(2732*2048 + 2560*1600 + 6016*3384 = 30,000,000 pixels, although I'm not sure if the iPad receives a pixel signal, or renders its own content)
So it doesn't seem to be a lack of graphics power that causes this limitation.
(Incidentally, the XDR and current-gen iPad pro displays are the first where I get the illusion, when watching high-res video, that there's an actual window in the display and I am looking at a real scene behind it)