so i have spectrum ultra 400+mbps
back of modem is that speed works fine.
i originally had linksys ea6400 when i had standard speeds of 200mbps... handled well had it for years . i went and got the upgrade they changed modems out to a new 3.1 modem and i was having alot of connection issues so i thought it was the router bought a new router a netgear nighthawk ac1750. everything worked flawlessly for a while 450+ mbps speeds. then it lowered back to 200... so did a factory reset and its good for another 2-3 days at 400 then back to 200... the only way to get 400 is a factory reset of the router.. and its really annoying. i was reusing the ssid and password then changed it. then left it the factory after the reset nothing helps, i have no qos on no port forwarding nothing enabled or changed just factory reset and it works and i dont get it... is the router at fault or is this a bigger issue? really kinda tired of factory resetting every few days..
speeds tested wireless, and hard lined in the back of pc and a laptop. i check multiple channels on the wifi, as well as hard line different devices during tests and they all end the same 400+ for a few days then drops back and wont go over 200...