Ditto, same in a rural area of Wisconsin I'm at a lot, for the past 3 years or so. Like, 3/4 of the Internet is slow through their shaping garbage. What worked for me was using WireGuard to my home network in an urban area (1 gig symmetrical fiber), or, using an ssh ~ socks proxy. Problems no more, until they decide to block those.
Support has been awful, best of luck if you go that route. They took us off their unlimited plan without consent, took 6 months to get it back. Also, throttling doesn't actually seem to happen once over their limit on the advertised unlimited* data plan, it's just most of the Internet is awfully slow most of the time going directly through this, ah, ISP, which they claim to be.
* Not actually an unlimited plan
Support has been awful, best of luck if you go that route. They took us off their unlimited plan without consent, took 6 months to get it back. Also, throttling doesn't actually seem to happen once over their limit on the advertised unlimited* data plan, it's just most of the Internet is awfully slow most of the time going directly through this, ah, ISP, which they claim to be.
* Not actually an unlimited plan