Limiter with VSync: by capping your framerate to a value just below your refresh rate (e.g. 58FPS cap on a 60Hz monitor), you may reduce the input lag from having VSync on. In short, it is recommended that you use the Frame Rate Limiter for most of your games, capping your framerate at your refresh rate, or just below it if VSync is onIF can't get smooth 60fps lock your frame rate to 30 for smooth gameplayRemember, in games where your FPS is consistently above your refresh rate, enabling VSync is perfectly fine and results in no drop in FPS.In general, I recommend starting off with VSync disabled in any game as this is the most trouble-free method of gaining the fastest possible performance. This is the simplest solution, and on monitors which have a standard 60Hz refresh rate, or for games in which your framerate is not consistently above 60FPS, this appears to be the best solution. You may notice some tearing, but this will generally be minimal if your FPS remains well below your refresh rate. Remember though that whenever VSync is disabled the graphics card and monitor are not strictly in sync, and tearing (however minor) may occur at any time.Nvidia graphics card owners running the latest drivers can find an Adaptive Vertical Synchronization option under the 'Vertical Sync' setting in the Nvidia Control Panel. When Adaptive is chosen, VSync will only be enabled whenever your FPS exceeds your Refresh Rate. If your FPS falls below your refresh rate at any time, VSync is instantly disabled. This provides an excellent compromise between performance and removing most tearing. However it can still introduce some mouse lag.Antialiasing LevelsThe first choice you have to make if you want to enable AA is the sample rate, typically expressed as 2x, 4x, 8x etc. This tells your graphics hardware how many pixel samples to take around the area to antialias - the higher the number, the more pixel samples used to blend the jagged lines, and hence the smoother the image will appear at the cost of greater processing power and hence lower performance.SMAA:We present a new image-based, post-processing antialiasing technique, which offers practical solutions to the common, open problems of existing filter-based real-time antialiasing algorithms. Some of the new features include local contrast analysis for more reliable edge detection, and a simple and effective way to handle sharp geometric features and diagonal lines. This, along with our accelerated and accurate pattern classification allows for a better reconstruction of silhouettes. Our method shows for the first time how to combine morphological antialiasing (MLAA) with additional multi/supersampling strategies (MSAA, SSAA) for accurate subpixel features, and how to couple it with temporal reprojection; always preserving the sharpness of the image. All these solutions combine synergies making for a very robust technique, yielding results of better overall quality than previous approaches while more closely converging to MSAA/SSAA references but maintaining extremely fast execution times. Additionally, we propose different presets to better fit the available resources or particular needs of each scenario.-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------The term Antialiasing (AA) refers to any method that can help smooth out jagged lines, and reduce the distracting shimmering and crawling of those lines when in motion. Crytek has chosen to build several AA methods into Crysis 3: FXAA (Fast Approximate Anti-Aliasing), SMAA (Subpixel Morphological Anti-Aliasing), MSAA (MultiSample Anti-Aliasing), and TXAA (Temporal Anti-Aliasing). The reason for this choice of AA methods is that each has its benefits and drawbacks, both in terms of image quality and performance. There is no single recommended optimal AA method, as it largely depends on a combination of your system's capabilities and personal taste.FXAA: A very efficient post-process AA technique, FXAA will remove much of the jaggedness from the entire scene with minimal performance impact. The key issue with FXAA is that it can introduce some blurriness.SMAA: A post-process technique similar to FXAA, the SMAA in Crysis 3 has several benefits over its faster brother. Firstly, unlike FXAA, SMAA does not result in any significant blurring. Secondly, there are three different levels of SMAA to choose from in Crysis 3: SMAA Low (1x), SMAA Medium (2Tx) and SMAA High (4x). SMAA 1x is an enhanced form of MLAA (Morphological Anti-Aliasing); SMAA 2Tx is denoted as such because it adds 2x Temporal SSAA (SuperSample Anti-Aliasing) to MLAA to achieve its results; and SMAA 4x is a combination of MLAA, 2x Temporal SSAA and 2x MSAA.MSAA: Multi-Sample Anti-Aliasing (MSAA) is a more traditional and comprehensive, but far more performance-sapping, AA method. It increases the sample rate of data to better render object outlines, reducing their jaggedness. It is available at three sample rates in Crysis 3: MSAA Low (2x), MSAA Medium (4x) and MSAA High (8x). The higher the sample rate, the smoother jagged edges become, at a hefty cost in performance.TXAA: This option is only available if you are using an NVIDIA GTX 600 series or GTX Titan graphics card. TXAA is based on MSAA, but places greater emphasis on reducing shimmering when in motion, known as temporal aliasing. This distracting shimmering can be particularly disastrous in Crysis 3 multiplayer when you're on the lookout for cloaked enemy nanosuits, which also shimmer. The available options are TXAA Medium (2xT) and TXAA High (4xT).FXAA has an almost negligible FPS impact, making it an attractive choice for an overall reduction in jaggedness.SMAA Low (1x) is not far behind FXAA in terms of performance, and again is a good choice for smoothing jaggedness while maintaining your framerate, but without the blurring that FXAA brings.SMAA Medium (2Tx) scores well, and is a viable option, especially for smoother foliage, as long as your overall framerate is high enough to avoid the ghosting it can cause.SMAA High (4x) is not overly desirable as it has a sharp performance hit, and once again requires a higher framerate to prevent ghosting.MSAA is useful for those wanting smoother results than FXAA or SMAA, but has a substantial performance penalty, especially at 4x and 8x sample rates.TXAA, especially at its Medium (2xT) level, is a viable option for those running a suitable GTX 600 series or GTX Titan GPU. It has a moderate performance hit, but at the same time better addresses overall jaggedness, particularly temporal aliasing, albeit with some blurring.