The input lag is caused by post processing from the HDMI signal and Game mode turns it off

and there's no input lag (should you experience any, check the settings on your TV to allow a game mode or something similar.

The only real issue is on some TVs or HDMI cables there is slight input lag on Super Mario World, but it is only noticed from people who own and play it on an original Super Nintendo with a CRT TV, then play it on the HD TV afterwards

Beyond this, I noticed some odd input lag on some games (Super Mario World) that could just be nostalgia dissonance, but the controls on games like Super Metroid and Star Fox were spot-

n’t get far enough back

it’s much harder now as an