rpi4 is massively memory bandwidth starved. It can't even keep up with drawing the screen in general, much less run games. VisionFive2's GPU (from Imatech) is

rpi4 is massively memory bandwidth starved. It can't even keep up with drawing the screen in general, much less run games. VisionFive2's GPU (from Imatech) is supposedly at least 4x as fast.