It's Windows 10. It's what it does. There is a way to block it from doing this, by manually shutting off telemetry and updates in services. I had to do this myself on my Windows 10 rigs, because frankly if you let that stuff run in the background it makes your PC almost unusable. It's a little complicated procedure for most people, but if you don't mind reading a few tutorials and adjusting your registry, it will be very worthwhile.