Evidence: https://www.youtube.com/watch?v=5WwDXV8kgwA&feature=youtu.be

Timestamp and explanations in video description. This guy is really not a good player at all yet pulls out crazy flicks out of nowhere every few kills. Pretty clearly tracking people behind walls and through smoke as well. The hacks become more and more blatant as the video goes along, so please watch it all and look at all the timestamps. 

Cheers!