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Telus Gigabit internet extremely SLOW.
Card), and laptop (with intel i211 gigabit Network Card) are both getting this extremely slow speed. All these tests were conducted from a different time of the day to avoid the busy high volume loa...
I have the same Intel I211 gigabit network adapter as you and also experienced extremely slow speeds. Apparently there is a compatibility issue between the Alcatel Lucent optical network terminals (ONT) that Telus uses and some Intel network adapters.
Intel forum discussion: https://community.intel.com/t5/Ethernet-Products/Help-Intel-I219-V-TCP-Checksum-Offload-IPv6-Issue/m-p/686435Intel workaround: https://downloadcenter.intel.com/download/27263/Disabling-TCP-IPv6-Checksum-Offload-Capability-with-Intel-1-10-GbE-Controllers
The workaround involves disabling the TCP-IPv6 Checksum Offload feature. It can be applied using the provided PowerShell script or manually in Device Manager. I applied it manually and everything worked great afterwards. Hope it helps.
I have the same Intel I211 gigabit network adapter as you and also experienced extremely slow speeds. Apparently there is a compatibility issue between the Alcatel Lucent optical network terminals (ONT) that Telus uses and some Intel network adapters.
Intel forum discussion: https://community.intel.com/t5/Ethernet-Products/Help-Intel-I219-V-TCP-Checksum-Offload-IPv6-Issue/m-p/686435
Intel workaround: https://downloadcenter.intel.com/download/27263/Disabling-TCP-IPv6-Checksum-Offload-Capability-with-Intel-1-10-GbE-Controllers
The workaround involves disabling the TCP-IPv6 Checksum Offload feature. It can be applied using the provided PowerShell script or manually in Device Manager. I applied it manually and everything worked great afterwards. Hope it helps.
