Ultimate 300 not doing as it should
I upgraded from 150 to 300 back in November 2019 and speeds were averaging above 300, now I cant get anything above 150. I contacted Cox and they have no clue and advised me to contact Linksy's as I am using their modem a CM3024 which Cox recommends and am running a Netgear Nighthawk AC1750 router and am hardwired into it. As far as the wifi part speeds are horrible nothing above 50 and am only a few rooms away. Anyone else having an issue like this ? Hate paying $94 a month for something that isn't doing as it is supposed to. Their is an amplifier on the line in the basement and I am only using one line and at most there are maybe 4 devices running at any given time.