Bootcamp Software Update. This update is highly recommended. I had to do some initial update for windows but Im blocking the 1909 update and not updating bootcamp until I enjoy this setup working for a little while at least.
This download contains the Windows Support Software Windows Drivers you need to support 64 bit versions of Windows 7 and Windows 8 and Windows 81 on your Mac. Download iMac Retina 5K 27-inch 2020 Boot Camp for Windows 10. This update adds support for the ATI-Radeon HD 5870 graphics card Apple USB Ethernet Adapter MacBook Air SuperDrive and addresses critical bug fixes.
This update is highly recommended.
After downloading the Boot Camp drivers open up the BootCamp folder and then run the Setupexe located in that. This update is highly recommended for all Boot Camp 31 users. You need to make sure to first have your Macs firmware updated then going to the existing Windows partition to run Apple Software Update which will install the FaceTime Camera driver. Apple Software Update on Windows provides any updates to the base BC drivers package obtained from the Action Menu.