IPv4 Connectivity cuts out for around 10 seconds every couple of minutes for an hour a few times a day.

For the last few months my internet has been very spotty in which certain websites or programs will disconnect for several seconds every few minutes a few times a day. I wasn't sure what the problem was but through some trouble shooting it appears that IPv4 disconnects while IPv6 works perfectly fine. Websites like Youtube, Google, and Wikipedia that I assume are IPv6 websites never cut but all other websites and programs do. This is apparent when I'm playing a game while talking to friends on Discord. I'll disconnect from the game and stop transmitting voice on Discord but I can still hear everything they are saying. Also, when I go to control panel > network and sharing center > and then click on my WiFi connection while the problem is happening IPv4 will say No Internet Connection while IPv6 says Internet. Windows trouble shooting says "Your computer appears to be correctly configured, but the device or resource (DNS server) is not responding."

I messaged support and they didn't help at all because they said that they can only diagnose the problem while it is occurring. I'm not sure how I'm supposed to message them while its occurring when the cuts only last about 10 seconds at a time and I cannot connect to the Cox website during the short time frame available.

I've tried disconnecting the modem both manually and on the app, the problem is the same on every device, and the problem is on Ethernet and wireless connection. I've tried uninstalling and reinstalling internet drivers and resetting IP connections to their installation defaults and nothing works. We even went as far to replace our modem with the newest one.

Any permanent solutions to the problem would help. Thanks.