Downloading Windows update for all your computer units will cost you time and bandwidth.
Since all of your units are downloading same updates, why not download the update on one computer then distribute to other units on the network?
Microsoft have these method embedded on Windows 10 called Windows Update Delivery Optimization.
Windows Update Delivery Optimization lets you get Windows updates and Windows Store apps from sources in addition to Microsoft. This can help you get updates and apps more quickly if you have a limited or unreliable Internet connection. And if you own more than one PC, it can reduce the amount of Internet bandwidth needed to keep all of your PCs up-to-date. Delivery Optimization also sends updates and apps from your PC to other PCs on your local network or PCs on the Internet.
Delivery Optimization works in two ways.
Download updates and apps from other PCs
In addition to downloading updates and apps from Microsoft, Windows will get updates and apps from other PCs that already have them. You can choose which PCs you get these updates from:
PCs on your local network. When Windows downloads an update or app, it will look for other PCs on your local network that have already downloaded the update or app using Delivery Optimization. Windows then downloads parts of the file from those PCs and parts of the file from Microsoft. Windows doesn’t download the entire file from one place. Instead, the download is broken down into smaller parts. Windows uses the fastest, most reliable download source for each part of the file.
PCs on your local network and PCs on the Internet. Windows uses the same process as when getting updates and apps from PCs on your local network, and also looks for PCs on the Internet that can be used as a source to download parts of updates and apps.
Send updates and apps to other PCs
When Delivery Optimization is turned on, your PC sends parts of apps or updates that you’ve downloaded using Delivery Optimization to other PCs on your local network, or on the Internet, depending on your settings.
Delivery Optimization is turned on by default in Windows 10.
Here’s how:
Go to Start , then Settings > Update & security > Windows Update , and then select Advanced options.
On the Advanced options page, select Choose how updates are delivered, and then use the toggle to turn Delivery Optimization off. When turned off, you'll still get updates and apps from Windows Update and from the Windows Store.
If you’d just like to stop downloading updates and apps from PCs on the Internet, select PCs on my local network.
-Dexter Magalang