Youtube uses all my bandwidth

[Wicks]

Hey guys!
I have a problem which started a few months ago, namely, that whenever someone watches Youtube, my ping to games skyrocket. I'm wired to the router and it doesn't matter who loads those youtube videos. My ISP said that they have no QoS active, they don't limit anything, and the router they provided have none either. I have a 20mbits connection, only 12 is coming through because of old cables, but it was fine for 10 years. Is it possible that youtube changed something, and it uses all the bandwidth it can get, because as i said, 12mbits were enough for a 720p video before without using up all the bandwidth.
Edit: Just tested it, and watching a stream with highest settings only increases the ping of every 10th packet, while a youtube video loading the ping is bad for the whole time.

 

[Willdobbo]

Which isp are you with?

 

[Wicks]

T-online (Telekom) in Hungary

 

[sizzling]

I had a similar issue and it turned out to be a faulty router. Everything worked individually but as soon as there were multiple devices connected performance was terrible. It was a decent Asus router but as soon as I plugged in the crappy free router my ISP had originally provided things improved greatly. Ended up buying a nice Netgear router and things have been great since.

The faulty router had been fine for over 2 years

 

[Wicks]

Well, I tried the old router, which had no problem before, even with that its bad. And it isn't the number of people on the network, it only happens with Youtube. I ran an other test now, downloaded GlassWire and Youtube uses up all the 1.2Mb/s download speed I have. I guess they just set a number for how fast a Youtube video should load, instead of always using 50% of the available bandwidth.