TP-Link Archer C7 v5 slow WAN speed

Hi Guys, probably this information will fit here. It looks that we have some regression in latest firmware.
I made some tests with my new ISP connection (PPPoE). Expected result should be around 600mbps.
dl: 190-209mbps
up: 60mbps
flow offloading enabled.

dl: ~600-620mbps
up: 60mbps
As expected.

Additionally I made tests on couple of versions between and it looks that latest stable version is v21.02.7.


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