a CPU intensive game (Civilization V) seems to run a *lot* slower on Windows 10 laptop
I've read quite a bit that game-slowness in Windows 10 is most commonly caused by the presence of the built-in XBox app (I'm guessing it's the hooks the app puts into games to enable video streaming to friends). The app can't be uninstalled normally. You
can remove it however, by doing the following:
-Start Powershell (do a desktop/start-menu search for powershell to find it)
-In Powershell, copy/paste in the following command:
Get-AppxPackage *xbox* | Remove-AppxPackage
and hit enter. You'll get a wall of red errors, but it should be removed.