I have two desktop computers. One has Asrock X370 Gaming X motherboard, Ryzen 5 1400 cpu, WD 256GB PCIe NVMe M.2 SSD, MSI Radeon RX 560 graphics card and 16GB G.Skill Fortis DDR4 2400 ram. The other has MSI Gaming Plus X470 motherboard, Ryzen 5 2400G APU, WD 500GB PCIe NVMe M.2 SSD, and 16GB G.Skill Flare X DDR4 3200 ram. These work behind a NetGear WNDR3400 router and are connected to Epson Workforce 645 and Epson V550 Scanner.
Both systems was running Windows 10 1909 fully updated. The only problem I had was on the X470 system not displaying the Epson WF 645 in the devices list with the printer icon. It was listed as other device, but I could still access and use the printer.
I downloaded and installed the Windows 10 2004 offered update on both systems. My update went as follows… 3:15PM clicked the download and install notification, it said getting things ready, this took about 8 min., 3:25PM started downloading, this took about 14 min., 3:37PM installation started, this step took about 33 min., 4:10PM Finish, reboot, getting things ready took about 7 min. 4:17PM completed and ready to use. The entire operation took about 1 hour 2 min. on my systems with 30M cable internet service.
Both systems are running fine with the Windows 2004 version update. The problem I was having with the printer icon not showing up in devices on the X470 system was corrected with this update and both systems are running fine with no slowdowns or other problems at this time. I have been running on new update about a week now.