Uninstall patch KB4482887
After installing KB4482887, users may notice graphics and mouse performance degradation with desktop gaming when playing certain games Destiny 2. (and others if you read the link from altchar.com but it effects NVIDIA and AMD cards)
Microsoft is working on a resolution and will provide an update in an upcoming release.
As a short-term resolution, users can uninstall KB4482887 to regain performance.