Very slow and losing wifi connection on 2.4 ghz. 5 ghz works fine and so does hard wired.

Thanks for responding. I have had all my devices that will allow to "forget" the old connection. The reason I got a new unit was because Best buy thought my power outage may have damaged something in the old unit. Up until the power outage it worked excellent. I have my tablets and sons Playstation 4 connected to 5ghz and they are not having any issues staying online. I had to end up buying a 50 ft ethernet cord to get internet on my desktop. I was told by Netgear that there is signal interference on 2.4ghz. That it is caused by too much network traffic (I live in Tampa, FL with lots of neighbors). Now their option for me is to either buy a new modem and router seperate or bridge the one I have and buy another router. I would just return this one but the original one I bought is over 90 days old and the one I have now is from a warranty I purchased separately. I don't want to spend a ton of money on modems and routers. I just want one that stays working lol. There aren't many options Spectrum gives you on modems/routers you can use. The reason I purchased my own is because I was renting one of theirs and it would disconnect like 50 times a day and said there was nothing wrong with it or my lines.