According to its official page, update KB4489899 fixes an issue that may degrade graphics and mouse performance with desktop gaming when playing certain games, such as Destiny 2, after installing KB4482887.Furthermore, 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