I'm not sure how tech-oriented you are but ditch their equipment. Every time I move, the techs are always confused because I want my own router/modem.
I upgraded a few years ago to this router. I thought it was weird that Asus was making routers but I took the chance. I love it!
A lot of people complain about Insight > TWC > Spectrum > and who knows if it'll change again, but I've honestly never had any serious issues with them aside from middle of the night maintenance.
Not all but I think most of the complaints about their service come from people that rely on their equipment instead of buying their own. Note: I've also seen a post where people have had issues with Spectrum and their own equipment. It could be something on their side with the line. It's not too difficult to make them send someone to check the line and/or replace it. One of my friends needed this very thing and had me call... I called and they had a tech out the next day to check the line signal.
Im prolly gunna upgrade to verizon fios 100/100 and get something like this https://www.amazon.com/Dual-Band-Super-Fast-Gigabit-MU-MIMO-RT-ACRH13/dp/B01LXL1AR8/ref=sr_1_acs_bss_3_3?ie=UTF8&qid=1543261850&sr=8-3-acs&keywords=router