A Reddit user claims he has discovered a neat new trick that can improve the performance of NVIDIA-based graphics cards. In a few words if you disable the NVIDIA Streaming Windows service, which starts automatically and runs all the time by default, you will get between 3-5 per cent more frames per second when running 3D games. The improvement is nothing major but if you can have it for free by only spending a minute or two digging in the Windows services why not have it then?
The NVIDIA Streaming Windows service streams games to an NVIDIA Shield handheld console and is not needed if you don’t own this device. To disable this service just type “services.msc” in Run and then set its “start-up type” to Disabled in its properties. Then restart your computer and this is it. The service is, however, used for ShadowPlay so if you use this one you can set the service to “Manual” start-up.
It is unclear which NVIDIA video cards get affected by this change but most likely the latest GTX 600, GTX 700 and GTX 900 series do.
Source: Techpowerup.com