[BBKing]

Um.

FPS being frames-per-second, I presume.

First, do you still get poor FPS when playing offline?
Second, do the games you play have any form of latency (ping) measurement built in? If so, tell us what it is.
Third, make sure that the connection from STB to PC is forced to 10Mb/half duplex speed - this is ample for what you want and has helped people with Samsung issues in the past.

I'm presuming you haven't upgraded the game code or settings recently, or are running spyware/P2P, and you do regular virus checks?

I doubt TS would say much more than game graphics performance per se is the responsibility of you and your PC - online game latency, however, is more of our problem.