I watched the video and I don't see how this can be related to hacking.... Also, this doesn't go here. Please direct your thread to the following forum https://royals.ms/forum/forums/report-abuse.107/ It can be handled more appropriately there.
That is a very obvious sign of a Hacker because they are programmed to auto dc or run to CS immediately when anyone else enters the same map. Well done on spotting the hacker.