If this dont help then there are some tweaks in Nvidia control panel
Try them:
All NVIDIA drivers come with their own control panels that let you tweak the most essential 3D settings. While you can set many of the following options in-game, some are not available or directly controlled by the driver. This is why it’s always a good idea to go through the list of all options and tweak them to best balance performance and visual quality.
To get to the NVIDIA Control Panel, right-click on your desktop, select “NVIDIA Control Panel” and head over to the “Manage 3D Settings” category on the left. These are the most important settings to tweak:
• Ambient Occlusion: This setting can enhance realism in some games by improving lighting and shadows. However, by enabling it, the FPS will drop significantly. Try it out and see if the visual improvement is worth the drop in performance.
• Anisotropic filtering: This filter makes textures in games appear crisper and cleaner, especially when looking at objects that are far away. But, the higher you set it, the less FPS you will get out of your game. If you set it to the standard “Application-controlled” option, games can choose between the levels of filtering. If you choose another option, games’ settings will be overwritten.
• Anti-Aliasing – Gamma Correction: This setting will allow for improved color quality in games, and its effect on performance is minimal. That’s why we suggest you make sure it’s set to “On”.
• Anti-Aliasing – Mode: This is one of the most important options for games. The higher it is set, the smoother all images will appear. However, if you use 8x or above, you will notice a performance hit. Again, you should probably test the setting.
• Anti-Aliasing – Transparency: The transparent Anti-Aliasing mode adds more realism to curves in games. Try the “Multisampling” option since it won’t noticeably affect the performance, yet it will increase the visual quality.
• Maximum Pre-Rendered Frames: This controls the number of frames that the processor prepares before transferring them to the graphics card. Increasing this value results in smoother game play, but you may notice a lag when using the mouse and keyboard. To eliminate the lag, try the “0″ setting.
• Multi-Display/Mixed-GPU Acceleration: If you have only one display, you should select “Single display performance mode”. If you have two or more displays, select “Multiple display performance mode”. If you notice glitches or strange textures on a multi-display setup, go for the “Compatibility display performance mode”.
• Power Management Mode: This adapts GPU performance to the needs of the game. If you play older games, stick to the “Adaptive” setting. Otherwise, go with the “Prefer maximum performance setting”.
• Triple Buffering: It increases performance when “Vertical Synchronization” (VSync) is enabled. It may, however, cause lags on graphic cards with lower RAM.
• Texture Filtering – Anisotropic Sample Optimization: This setting should be “On” to improve your performance. Keep in mind that, in some games, you may notice a slight decrease in the visual quality of textures.
• Texture Filtering – Negative LOD-Bias: LOD stands for “Level of Detail”. If you set this to “Allow”, some games get a sharper look in still scenes, while introducing some form of aliasing (jagged looks) or shimmering in fast-moving scenes. Set this to “Clamp” and enable both Anti-Aliasing and Anisotropic Filtering to get a better picture quality.
• Texture Filtering – Quality: This function specifies how all textures will appear in a game. On lower-end hardware, you might want to try the “Performance” or even the “High Performance” settings to get more FPS.
• Threaded Optimization: This option should always be “On”, as it allows the support of multi-threaded optimization for modern multi-core processors.
• VSync: It synchronizes the frames that your graphics card renders with the refresh rate of your monitor. If you disable it, you might find that games run more smoothly; however, you will notice that some parts of the screen might not be rendered correctly and appear to lag. Disable it only if your monitor has a higher frame rate than your gameplay.
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