Upstream light blinking, spotty internet

Hello,

I've had Xfinity internet for about a week now. Things had been fine until this morning, seems my upstream light is blinking and my connection is mediocre. I still have internet, but anything requiring a stable connection (ex gaming) has noticable interruptions. I can further see the issues by pinging Google and watching timeouts roll in consistently at varying intervals.

My line has no splitters or any other devices on it- only thing I can think of that could be my issues versus my ISPs is that the tech installed a needlessly long coax cable between the drop and my C6220, like 15 feet long. I'm planning to run out and buy a shorter coax cable just to ensure that's not the issue, but I thought I would drop my Cable connection status and event log in case something else stuck out.

Thanks for any assistance!