R6350 drops the 2.4 ghz intermittently, 5 ghz never drops

[whidxmo]

This has just started happening in the last month or so.  The 2.4 ghz will randomly drop while the 5 ghz stays working.  I have to reset the router to get it working again.  I contacted support and they said it was a resolvable issue that we were experiencing packet loss from congestion (or something like that).  I wanted to see if I could fix it without having to pay support to do it.  We have had the router for about a year and a half.  We have recetly moved and have only experienced problems since we moved. In our previous home we had a ruckus setup though.  

[plemans]

what modem/gateway is it connected to? 

What firmware version are you on? 

Have you tried changing the 2.4ghz channel? 2.4ghz is more sensitive to interference so changing to a less congested channel can help

[whidxmo]

@plemans 

The modem is a Netgear voice cable modem CM500V.

The current firmware version on the router is: V1.1.0.78_1.0.1

I havent really tried anything on it yet.  I am a complete novice when it comes to this stuff and I didn't want to accidentally make things worse.  

[whidxmo]

@plemans 

Do I just choose a new channel? Is there a way to determine what the best channel would be?

[plemans]

I usually use either inssider or acrylic wifi scanner.

It lets you see whats broadcasting on what channel (and channel overlap) to help choose the best channel.