Purchase Our Own Modem for Spectrum?

[scjr]

A quick "google" seems to confirm what you said and there's even a class action law suit against Arris.

Intel has confirmed the defect, stating that the company is "aware of an issue with the Puma 6 system-on-chip software that impacts latency," but after numerous months, has failed to release any update that fixes the issue.

According to The Register, "The problem appears to be that the x86 CPU in the modem is taking on too much work while processing network packets. Every couple of seconds or so, a high-priority maintenance task runs and it winds up momentarily hogging the processor, causing latency to increase by at least 200ms and, over time, about six per cent of packets to be dropped. It affects IPv4 and IPv6 – and it spoils internet gaming and other online real-time interaction that need fast response times."

Even users who do simple web browsing may be affected by the momentary high spikes in latency, causing websites to feel sluggish or not load.​

I was considering buying another modem, but found out it had the Puma 6 chipset. I ended up buying an Arris SB6183, with Broadcom chipset.

Pretty big thread about the Puma chipset on DSL Reports. I think they even have a tool there to check and test your modem.

 

[ai-apple]

I went to Spectrum office today to return TW Arris TG1672 modem. Spectrum gave me Technicolor modem. I ran speed test via WiFi connection through Asus rt-ac5300 and I got a speed of 450+/23.