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In general, the lower you set the render resolution (from 59% to 85% of the display resolution you play at) the more frames per second you'll see when playing. Thus, you can specify render resolution and sharpening amount in this GeForce Experience settings menu and the software will use those values when you launch into your next game. Under ideal conditions, Nvidia's Image Scaling feature improves game performance by rendering frames of gameplay at a lower resolution (meaning it can draw them easier and faster, so you get more per second) then upscaling them to the resolution you're playing at using Nvidia's graphical enhancement tech. Notably, enable Image Scaling if you can to see how much of a performance improvement it gives you. It's useful info, but there are also some advanced settings you can enable in here to further optimize how well your PC runs games.
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There's a lot to look at in the Settings menu for GeForce Experience, including a display of your system's vital settings and a rundown of how well it can do things like play VR games, stream gameplay, capture in-game photos (using Nvidia's Ansel tech) and more.
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