Windows Auto-Tuning is one of those features that has caused vastly varying results for users in the way of Internet browsing speed. Go to “Settings -> Update & Security -> Advanced options -> Delivery Optimization.” Here you should either switch the “Allow downloads from other PCs” toggle to Off, or leave it On but make sure you select “PCs on my local network.” 2. The bad side to this is the option that does the same thing but for other Windows users across the whole Internet, tying your PC into a P2P network that helps Windows update download speeds for strangers but hogs your bandwidth. Locally, this means that if you have a Windows update installed on one PC, bits of it can be fed through to a Windows update on another PC on your network, saving bandwidth. There is an option in Windows 10 that may be switched on by default which ties your PC into a Microsoft-handled P2P network, which uploads your installed Windows updates and distributes them to speed up updates on your home network and for strangers online.
So here’s one of those things that you probably didn’t know about Windows 10, and it sounds kind of scary. Turn off P2P Delivery Optimization in Windows 10