According to the release info of update KB4489899 it fixes an issue that can negatively influence graphics and mouse performance with desktop gaming when playing certain games, such as Destiny 2, after installing KB4482887.

This update also resolves an issue that could cause users to receive "Error 1309" while installing or uninstalling certain types of MSI and MSP files, as well as an issue in Microsoft HoloLens with tracking and device calibration that has affected some users. This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

• Addresses an issue in Microsoft HoloLens with tracking and device calibration that has affected some users. You may notice improvement 10-15 minutes after installing this update, but we recommend resetting the holograms for best results. 
•  Addresses an issue that may cause users to receive “Error 1309” while installing or uninstalling certain types of MSI and MSP files.
• Addresses an issue that may degrade graphics and mouse performance with desktop gaming when playing certain games, such as Destiny 2, after installing KB4482887.
• Security updates to Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows Shell, Windows App Platform and Frameworks, Windows Kernel-Mode Drivers, Windows Server, Windows Linux, Windows Hyper-V, Windows Datacenter Networking, Windows Storage and Filesystems, Windows Wireless Networking, the Microsoft JET Database Engine, Windows Kernel, Windows, and Windows Fundamentals.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

Windows 10 patch Fixes graphics & mouse performance