If you don't have a VPN you will notice the service buffering a lot, you can blame this on your ISP they are throttling your connection speeds.
Can ISP throttle streaming?
Most ISP's are throttling during the World Cup.
Streaming sites use a lot of bandwidth, so ISPs tend to start throttling when they notice you streaming. And during periods of network congestion, ISPs might throttle connections to balance their network speeds, helping as many users as possible get decent service.
How do I bypass ISP speed throttle?
Bypass ISP Throttling Your Internet Traffic: Use a VPN
