How is he doing this?

[raffyyy]

https://www.youtube.com/watch?v=I5QyNA6H6rY&list=UUXmHLj2vO0XjsdcZSgBic3A&index=1

[Deadfreak]

Looks like speedhack and aimbot. If not, then maybe a lag switch on his modem/router.

[F4wk3s]

Looks like speedhack and aimbot. If not, then maybe a lag switch on his modem/router.

It's a lag switch. Even the videos title says it's controlled lagging:
LOLYOU - A New Innovation of Speed (Lag trolling in ESEA)

[x2000]

Im doing this on public servers, its sooo much fun trolling people, haha :)

[Sys2k11]

x2000 HOW?! Was the Question. And not that you are doing this.

[x2000]

Just build one, a sharp knife. Some knowledge about TP cables and a lamp button :)

[Deadfreak]

Or a modem/router with a lag swtich aka standby button. I used to do this crap back on Halo 2.

[JohnnyWalker]

Or just a program which can manipulate network data.

[VecToz]

Theres quite a few lag switches programs out there lol.