If you have no luck with wired internet give this a shot and try an antenna and cooling upgrade if it works at all to get really good speeds and low latency: https://www.t-mobile.com/home-internet/eligibility
Prior to that I rolled my own unlimited data AT&T 4G LTE router while I tried to keep getting my local cable ISP to come to my house or simply acknowledge that they provided service to my address, according to the FCC.
I did the pre-paid centurylink deal for one month, paid all fees up front, and returned everything to them on day 29. Centurylink .5 mbit DSL is absolutely useless.
The AT&T 4G LTE I averaged 30mbit symetrical, maybe a 3/4 of one United States imperial mile to my nearest tower.
After filing the complaint, I had them trenching my back yard in two weeks running 360 feet (sorry I can't metric) of coax.
