David De Gea was the worst for this. Any time he played in a big competition or in a game that was actually important he’d usually fall apart or make a mistake.

Having to get every offside decision down to the absolute millimeter. Players aren’t machines and engineering an advantage to that level of accuracy, also it just misses the entire reason the offside rule was introduced in the first place. VAR should be able to review possible offsides in real time, without lines and make a judgement based on a simple eye test.