No, resolution is what will impact your performance of your computer's grapics card in games. The higher the resolution, the lower the average FPS will be. And don't get confused in the difference between 120Hz TVs and 120Hz/144Hz monitors. TVs are not capable of supporting a native refresh rate above 60Hz directly from the input source (e.g. your computer). The TV takes the original 60Hz signal and buffers it and artificially creates a 120Hz (or higher) output onto your TV screen. This allows for effects such as motion blur and true tracking to occur. However, the side affect of this is that input lag is greatly increased. This makes gaming on TVs, especially games that require quick reflexes such as first person shooter (FPS) games, less ideal than on a true gaming monitor. Unlike TVs, gaming monitors are capable of rendering at the same rate as the input source. The faster the refresh rate, the lower the response time and input lag depending the type of panel (e.g. IPS, TN, AHVA, PLS, etc). Regardless of the application, TVs are not well suited for fast action PC gaming and are more ideal for the slower games such as RTS, RPG, sports, player vs. player fight/combat games (Mortal Kombat, Street Fighter, Tekken, etc), and driving games.