An upgrade to Windows 10 Creator made my wifi-connection very slow. From 60mbps to barely 50kbps, but on my phone I still experienced the maximum speed.

For me the solution was to disable “Receive Segment Coalescing” (RSC), described by Steven Van de Craen:
http://www.sharepointblogs.be/blogs/vandest/archive/2017/05/08/windows-10-creators-update-slow-wireless-connection.aspx

Steps:

  • Run an elevated PowerShell prompt
  • Get-NetAdapterRsc to show the status per adapter
  • Disable-NetAdapterRsc –Name “your_wifi_adapter_name” to disable