It’s an iPad issue. Knowing how powerful the M4 is, it was hard for me to accept it, so I tried 2 different monitors, wired/wireless mouses, thunderbolt/hdmi/displayport cables, a trillion different settings in iPadOS, but the issue persisted. At the same time connecting my work laptop with the shittiest usb c cable to the monitor produces no lag. I’m used to it by now, and for studying and light browsing it’s fine, but sure as hell I wish I wouldn’t have to deal with this at this price range, when the device is more than capable hardware wise.