trouble with Spectrum internet

has anyone outside of westwood had major issues with the internet service when it comes to streaming?

their package comes through OK about 90% of the time, but I try to use Prime, I'll get buffering of a show for 3-4 min then it plays from 5 min+ then re-buffers. Crunchyroll is horrible, It plays for maybe 30 seconds then buffers for 10 min or more.

Had this issue for 9 months now, tech support is sending someone out to look at the lines (which they said they checked many times) and I do have 400MB and only 3 devices running