slow it down in youtube player also, clearly some of these mouse/micro mouse movements are inhuman, with the only exception being playing on the worst mouse in the world that is half broken, and also playing on a wooden desk that has been corroded, or a mouse glitch. 1st option is rare the latter is a rare occurence, when yours can be seen in multiple demos. who knows, but i know cheats, and i also know that its impossible for your hand to make these types of movements, consistently.
https://www.youtube.com/watch?v=4N8BiQzIdKI
https://www.youtube.com/watch?v=4N8BiQzIdKI