I found the following description for the optional update; I don't think these changes are needed:


Highlights

Updates an issue that causes Narrator to stop responding after you unlock a device if Narrator was in use before you locked the device.
Updates an issue that prevents you from finding certain Microsoft Xbox consoles on a Windows device.
Updates an issue that fails to display the Microsoft Xbox Game Bar app controls on supported monitors. This issue occurs in certain Microsoft DirectX® 9.0 (DX9) games that are running with Variable Refresh Rate enabled on these monitors.
Updates an issue with USB 3.0 hubs. A device connected to the hub might stop working when you set the device to hibernate or restart the device.
Updates an issue that randomly changes the input focus of edit controls when using the Japanese IME or the Chinese Traditional IME.
Updates an issue that makes the touch keyboard unstable in the Mail app.
Improves the visual quality of Windows Mixed Reality headsets that run in lower resolution mode.
Updates an issue that prevents the PDF24 app, version 9.1.1, from opening .txt files.