WiFi stops working after starting a YouTube video.

The problem only happens on my laptop (Win 10), connection on my phone is fine. This happens ONLY when I start watching a video on YT. Watching videos on other sites/streaming services works normal. I play the video and after about 5-10 seconds it stops. My connection says its OK, but no sites will load. I either have to wait about a minute (this causes the video to load fine for a couple minutes and then stop again) or manually reset the connection on my laptop (Internet works, but once again, as soon as I start a video it crashes). I have an Intel Core i5-6200 and 8 gigs of RAM.