I'm really baffled by this problem. When I'm using my home wifi with my new laptop and watching youtube, the internet speed basically halts, and the youtube video just buffers, maybe continuing after a while with 144p. Weird thing is that otherwise the internet seems to be fine, even if speedtests show me at around 0,2 mbs. Otherwise my speed is around 10-20mbs. My wifi works fine consistently on other devices (PS3, PS4, tablet and a phone plus other PC's, all using youtube without problem) I have tried shutting them all off, but the problem persists. Then if I use an inferior wifi hotspot sent from my phone, then youtube works without problems on my new laptop. (hotspot speed is 5mbs.) It also seems, that my ping jumps up during these times, so I'm not sure if it's actually my connection or if it creates latency like no other (spikes around 500-1500ms) I'm at a loss here, so I thought of asking you folks. I hope you can provide assistance, that would be much appreciated. My laptop is Asus X550v, Windows 10 home 64 bit Intel i7-6700hq 2.60ghz, 8GB ram, Nvidia geforce gtx 950m, and Inter HD graphics 530 256 SSD. Motherboard seems to be Asustek x550vx or something. I am using 802.11n but have tried 802.11b & 802.11g but those create a variety of other problems. I have tried also updating my router via autoupdate and getting an update from motherboard-manufacturers website. My router is zyxel VMG1312-B10D, and my internet provider is Sonera (one of the biggest ones in Finland). My wifi device is Realtek 8821AE Wireless LAN 802.11ac. I tried Chrome and firefox, I tried updating plugins (flash mainly). I tried forgetting the network and then using it again. I have disabled location and bluetooth. I have also removed extensions from chrome, and it did nothing. I also tried restarting the router many times, to no avail. The problem is not occurring all the time, but usually comes in a few minutes after watching youtube. I tried disabling QoS from my router, but It did not seem to help. I also did a clean boot, and problem remains. I did a test when internet was semi-working, and then another one when it got slow again. 1st: http://www.speedtest.net/result/5787005356.png 2nd: http://www.speedtest.net/result/5787015538.png Here is also what my youtube stats looklike when it happens. https://dl.dropboxusercontent.com/u/14256970/Youtube%20... Also interesting to note, when ever I do the speedtest, the youtube speed returns, but starts decreasing when the speedtest is over. Thanks for all the help already, and please ask if I didn't mention all the relevant information.