I can confirm DisplayLink (DL) has no visible lag issues (I was the one who complained it as well while working on MacBook Air 11' 2011) on my brand new MacBook Air 13' M1 with my old DL Startech hardware capable of 2560x1440 resolutions at 60Hz on two Dell 2515H monitors.
4 SCREENS WORKING with Apple MacBook Air 13' M1 (2 x StarTech DisplayLink hardware, 2 x natively?)
