you have a bunch of errors in the one channel. But more importantly, what does your logs show? That shows us longer term issues

I did a factory reset over the weekend hoping that would fix things and it has not changed anything. From what I’ve read online corrected errors in that OFDM channel aren’t concerning?

You have t3 errors and other errors that indicate line issues. STart with removing any splitters, amplifiers, or anything else in your line. Check the line for loose connectors, corrosion, kinked lines, or anything impacting the coax. I’d try direct connecting the modem right where it comes into the home to prevent issues in the walls 

Will do! 

Is there any reason those would start randomly? Modem was stable for a good 2 years and just recently has started to have problems.

As ​@plemans suggested

1. Check for loose connections in the wall that might affect the coaxial cable connections.
2. Make sure only one Ethernet connection is plugged into the SB8200 modem if it's your router.
3. Isolate the issue by connecting a computer directly to the SB8200 using an Ethernet cable, bypassing the router. Monitor the connection:
   • If the direct connection remains stable, the router might be causing the issue.
   • If the direct connection drops, try using a different Ethernet cable.
4. Check the cable signal levels to verify that they are within the acceptable range.

Could you help us with your subscribed internet speed plan?

Cable signal levels are crucial for maintaining a stable and efficient internet connection and low cable signal levels can significantly impact your internet connection through a cable modem.

For you reference, please refer to the below where you can find the steps on how to check the cable signals.

http://arris.force.com/consumers/articles/knowledge/SB8200-Cable-Signal-Levels