Oh .... on a second note: 
I know all this sounds silly and not worth the time but ,you know better fps means more kills and upper hand so even if you change these small things .If you can boost your fps by 2o or more fps ,It is like dropping your ping by the same amount .

I have had a killer nic m100 card and now xxfast_lan on mother board.
If i am playing someone who has a great ping I can lower my output to the server and up my input to me with these options and gain info and create lag for them .so it sounds dumb but I can get info at a 30 , 40 ,50 ping but transmit my ping out at a 100 plus ping for them .
Try to hit me now type thing you know.

I run my ping even in and out till I get a cheater or someone who just doesn't seem right them I can change it up and then everything is back to square one and even playing field once again .

So dude might not be cheating with a hack but with alot of time and tweaks and hardware.....manipulate the game in his favor with out using hacks the server will pick up on .

Emac made our own custom server cheat protection for us that logs everyone's  ini. files and demo records their game play with out letting the user know they are being watched and logged like most servers do (blank has been kick or banned from server)is what the message will say on other servers and the user gets the same message on their side as well ..We don't do that here.
We log it record it study it ,then find a way to prevent it in the future .

when you log on to a server the server reads your game engine , user ini,ut ini. and transmits only what your ini tells it that it wants to receive .

so tweaking your ini.tells the server to send half the data it needs to run the game and transmits only the info you tell it to receive from you as a client or user in game .
Cut both in half means you run twice as fast as the guy with a stock ut.ini file , then cut fps, up refresh rates....etc...

This is how you gain the edge on a guy like the guy you speak of or at best even out the playing fields a bit for more conman ground to play him with .