Sets DODownloadMode = 0 under Policies\Microsoft\Windows\DeliveryOptimization. By default Windows can upload your downloaded updates and Store apps to other PCs over the internet (peer-to-peer), spending your upload bandwidth on Microsoft's distribution. Mode 0 = HTTP only, direct from Microsoft, no peering — your connection stops seeding updates to strangers. You still get updates normally. Reversible.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/deployment/do/waas-delivery-optimization