This is what a PUMA6 intel chipset modem does to your latency, This causes jitter in games voice chat and virtual meetings. This is a major issue to quality of service. Using
Intel Atom-based Puma 6 Modem Chipset has Severe Latency Issues, Many Cable Modems Affected | TechPowerUp
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Bad Modem Test - Do Not Buy These Modems List
Why your gigabit broadband lags like hell – blame Intel's chipset • The Register
Amazon.com: Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast Xfinity, Cox Gigablast, Spectrum | 2.5 Gbps Port | 2500 Mbps Max Internet Speeds : Electronics
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