Updated 2/24/26

So, how many Frames Per Second can the human eye see?

You may wonder what happens if you’re watching something with a really high FPS rate. Are you actually seeing all those frames that flash by? After all, your eye doesn’t move as fast as 30 motions per second.

The short answer is that you may not be able to consciously register those frames, but your eyes and brain may be aware of them.

For example, take the 60-frames-per-second rate that many have accepted as the uppermost limit.

Some research suggests that your brain might actually be able to identify images that you see for a much shorter period of time than experts thought.

For example, the authors of a 2014 study out of the Massachusetts Institute of Technology found that the brain can process an image that your eye sees for only 13 milliseconds — a very rapid processing speed.

That’s especially rapid when compared with the accepted 100 milliseconds that appears in earlier studies. Thirteen milliseconds translate into about 75 frames per second.

Source: HealthLine

---

V-Sync, G-Sync and FreeSync

Adaptive-Sync was introduced by Nvidia as G-Sync. AMD also added FreeSync to provide Adaptive-Sync for their cards.

Enabling V-Sync could eliminate tearing, but causes increased lag and stutter.

The “Vertical Sync” (V-Sync) setting in Nvidia Control Panel set to “Fast” renders unconstrained almost as fast as V-Sync disabled, except doesn’t tear since frames rate above your monitor refresh rate will just drop the extra frames.

G-Sync can eliminate screen tearing and minimize the display stutter and input lag.

Leaving G-Sync on won’t cause any harm, running games beyond the maximum refresh rate of your monitor will disable G-Sync, meaning that if you’re playing an easier to run game there is likely no benefit to using it.

---

The settings below are designed more towards performance, while retaining good 3D image quality and help avoid stutters.

Note: Avoid global overrides that affect all applications.

---

---

Suggested performance settings can differ depending on your GPU model and driver. After applying these settings, you can raise quality settings until the frame rate drops in the most intense graphics setting.

Reminder: your brain can only identify images at a maximum of 75fps.

---

Manage 3D Settings Menu

Features	Performance settings
Image scaling	“On”: GPU Scaling & Sharpening, boosts frame rates for the application.
Antialiasing – Mode	“Application-controlled”: can minimize jagged edges, often called “jaggies” or “the staircase effect,” in some situations.
Antialiasing Transparency	“Multisampling”: provides superior performance.
Power Management mode	“Prefer maximum performance”: graphics card’s performance level
Shader Cache Size	“Unlimited”: maximum disk space for storing shader compile. Setting a size limit too small may cause the driver to remove shaders you still make use of and cause game play stutters
Low Latency Mode	“Off”: prioritizes render throughput by allowing games to queue frames. Good for CPU-heavy games or when your GPU has plenty of power
Texture Filtering Negative LOD bias	“Allow”: lets applications specify a negative LOD bias when anisotropic filtering is used.
Texture filtering – Quality	“Performance”: offers an optimal blend of image quality and performance.
Texture filtering – Trilinear optimization	“On”: improves texture filtering performance by allowing bilinear filtering on textures in parts of the scene where trilinear filtering is not necessary.
Threaded optimization	“Off”: for older games
Vertical sync	“Use the application setting”: to use the settings within the application to control V-Sync. “Fast”: improves latency without introducing tearing. “Off”: useful if performance is more important than image quality. Note: All three can produce higher Frames Per Second (FPS).
Max Frame Rate	The frame rate (FPS) should not exceed your monitor’s refresh rate, as excess frames will be discarded and not seen, allowing the graphics card to reduce workload and wasted heat. (to check yours go to: Start > Settings  > System  > Display  > Advanced display settings.)

---

Flushing DirectX Shader Cache On Windows 11, DirectX Shader is an optimization feature for storing pre-compiled versions of special instructions, known as shaders. Shaders are small programs understood by the graphics card that control various graphical effects. Compiling shaders can be time-consuming, and using a cache helps optimize performance by providing easier and faster access to pre-compiled versions. The decision to clear the cache will depend on you. However, below are some reasons why you may want to do so. To resolve performance issues – A cleared DirectX Shader cache may resolve some performance issues, including graphical glitches and stuttering. Freeing up disk space – Even though the cache may not take up much space, clearing it will still free up some extra space on your computer. To update the cache – If you have just updated your graphics card or installed new games, you may clear the DirectX Shader cache to fill it with new information. Note: clearing the cache is not something you must do often. It is mainly a troubleshooting step when you face some graphical issues. This procedure will not negatively affect your system. This is because the cache is isolated storage with no permanent information. You cannot disable or prevent the creation of the DirectX Shader Cache. Windows 11 has no official way of disabling this optimization feature. Ccleaner provides an option to flush the DirectX Shader Cache. To flush DirectX Shader Cache Using Disk Cleanup 1. Open Start Menu, type cleanup in the search bar, click Disk Cleanup to open it.. 2. Select your C drive, then click the OK button. 3. Tick the DirectX Shader cache option and click OK. Note: Though this is meant to flush DSC, it could be a good idea to check every listed item.

END