LOL Spectrum theres your problem right there Hahaha. I have them as well, called a few weeks ago about speed issues, they said nope everything is fine, so I went out and bought a broadcom based modem to bypass their ■■■■■■ one, and 3 days after I got the modem up and running I got an email from them telling me they fixed my connection. LOL
BTW Id goto dlsreports.com and run a speed test. Look to see how much bufferbloat you have, I was getting 5000ms of bufferbloat, I used the Bufferbloat function on my netgear router and started trimming speed until I got a clean connection. Turns out that that 120mbps connection I have with them after being cleaned is more like 70 mbps. Once I trimmed the bloat the sim started looking and running alot better…