Variable refresh rate (VRR) allows your display to match the framerate of an image source, such as a game — and doing so prevents screen tearing. Support for VRR has been added to the cosmic-comp compositor and Displays Settings. You can set VRR to be either always on or automatic, which will enable VRR for fullscreen content.
On Ubuntu, only the server version of driver is available at this point.
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nvidia-dkms-565-server