Let's give credit where it is due- Microsoft was quick in admitting that their Windows 10 update (KB4482887) from March 1 had a detrimental effect on performance, especially as it related to specific gaming scenarios. Under a week later, we now have a public fix available as well. The latest update from today, March 12, is version KB4489899 (OS Build 17763.379) and claims to address "an issue that may degrade graphics and mouse performance with desktop gaming when playing certain games, such as Destiny 2, after installing KB4482887", among other things.

Other listed improvements and fixes include improved HoloLens tracking and device calibration, solving a bug that caused some users to get "Error 1309" when dealing with some .MSI and/or .MSP files, and a host of general security updates to various Microsoft software solutions. There remain some issues with this update, however, which are listed in the source page linked below. The update should be available for download and install automatically via Windows Update, as of the time of this post.