PC gamers looking for smoother play can often get it by putting a ceiling on their frame rates rather than letting them run free. Capping frames per second can help a system reach and hold steady performance, provided the hardware can keep up, and it reduces the likelihood of screen tearing. The practice also lightens the load on the graphics card, which can mean quieter fans and lower power draw overall.
The case for a cap is strongest on a monitor that supports Variable Refresh Rate (VRR). A limit keeps a game inside the effective VRR window, which is generally understood to begin at 48 fps and end at the display's maximum refresh rate. Holding the action below that refresh ceiling also trims latency slightly. Combined with V-Sync, a frame limit is intended to keep tearing from appearing at all.
Screen tearing occurs when the GPU delivers a new frame while the display is still showing the previous one, so portions of both frames appear at once, showing up as flickering horizontal lines during motion. NVIDIA's G-Sync and AMD's FreeSync both match a display's refresh rate to the GPU's frame output, which is why a minimum frame level is usually unnecessary; a dip from 120 fps to 110 fps is generally imperceptible.
On NVIDIA hardware, users can set a target through the NVIDIA app or the NVIDIA Control Panel by going to Manage 3D Settings, then Global Settings, then Max Frame Rate. AMD GPU owners can apply a system-wide cap in AMD Adrenalin under Gaming and Radeon Chill by matching the minimum and maximum fps values. Third-party tools such as Guru3D RTSS RivaTuner are another option.
The recommended cap depends on the panel's top refresh rate. Pairing V-Sync with a limit three or four frames below that maximum typically stops tearing, meaning 57 fps on a 60Hz screen, 117 fps on a 120Hz display and 237 fps on a 240Hz panel. The difference between 57 and 60 fps, or between 237 and 240, is unlikely to be noticed, and smooth, tear-free play should follow as long as the GPU does not fall below the chosen value.
V-Sync works by synchronizing a game's frame rate to the display's refresh rate, making the GPU wait for each refresh cycle to finish before sending a new frame. That wait adds a 16.7ms delay on 60Hz panels, 8.33ms on 120Hz screens and 4.17ms on 240Hz displays. The trade-off is input lag, typically about one extra refresh cycle, and queued frames can push latency higher if the GPU cannot render fast enough.
For players using NVIDIA cards who want the lowest lag, NVIDIA V-Sync Fast, found in the NVIDIA Control Panel under Manage 3D settings, aims to cut standard V-Sync latency while still reducing tearing. It lets the GPU continue rendering instead of waiting for a refresh cycle, so it does not cap fps the way ordinary V-Sync does. It has produced solid results in games running well above a monitor's refresh rate, though it does not work in every title.
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