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Software vs hardware flow offloading

Hi. I am new to openwrt and today installed it on my archer c6. Everything is working well, however, I noticed CPU to be going near 100% utilization when I am watching HDR content ( I am using htop to monitor cpu usage)

I recently came across the software and hardware flow offloading options in firewall, but I am not sure what purpose do they serve.

Would enabling any one of them lessen the toll on my cpu?

Thanks.

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Yup, enable both if you don't use SQM

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Do you know if hardware flow offloading works with Archer C7 V2/V5? I see the option to enable it, but I don't know if the hardware actually supports it. I'm finding conflicting info, older posts say that it's only supported for MT7621 devices.

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It will bypass a lot of the network stack so it can't work with SQM. Software flow offloading works on all hardware and will give you a lot more performance if you're CPU limited though. Hardware flow offloading only works on some hardware not all but if yours is supported yes enable both.