Most likely your equipment is good.
Who is the provider for you internet service? (ISP)
Recently some providers have had bad service for unspecified reasons.
It varies by region.
Sometimes the 3G and 4G serve is better, even in the same area.
The best I can offer is that you contact the ISP you are using.
I have had Internet services for four different providers over the past 13 years at this location. This last year I have had more problems than ever. The prov ider does NOT inanimate with me what the issue is.
There has been much speculation, but no clear answers. But there is a lot of anecdotal stories to support the idea that the ISP companies have a problem.
Here is one of many:
http://www.extremetech.com/computing/177073-why-netflix-streaming-is-getting-slower-and-probably-wont-get-better-any-time-soon...Netflix and Comcast have come to an agreement. Netflix now has a direct connection to Comcast’s network (peering), and Comcast users should see much improved service as a result. Money changed hands, but no exact figures were made public.
That implies that Comcast might have made Netflix service less reliable .Of course, that may not be your problem. But it shows that many think the problems are with the policy adopted by the ISP, not the PC or OS.
The best I can offer is you keep talking with your ISP.
