There is an issue with Receive Segment Coalescing (RSC) on Windows 10 that causes download speeds to stall while connected via WiFi.
Steps to disable Rsc using Microsoft’s automated tool:
1) Download the “.diagcab” file located here: https://aka.ms/diag_cssemerg11005
2) Run it, and let it see if it can determine the problem and fix it.
3) Re-test your wireless internet connection.
Once the above is done the problem goes away.
- HT: Microsoft Answers: WiFi Issues with Creators Update
- Via a client of ours