Internet connectivity & TV quality issues

I have been having issues with my Internet losing connectivity and also pixelation on cable TV channels. My SB6183 shows lots of T3 Timeouts. I've had these issues on and off for months and most recently replaced the coax cables and splitter, but it hasn't improved. All connections are tight. What else could be going on?

https://drive.google.com/file/d/17sr_a7X_gR6OGtcuNyjJXy1sWWFpI8oy/view?usp=sharing 

https://drive.google.com/file/d/1weQdR6BPlTyZfTzKyxkGQ0Hb_D5YQLch/view?usp=sharing

Thank you for any help you can provide.