Archer T9UH AC1900 V2 is not negotiating 1.3Gbps on 5G wifi network.
Bandwidth wan- 1Gbps max
Router: TP-Link AX50 1000Mbps link speed wan speed.
Tested the adaptor on PC and laptop, from far to 30cm to the router. I tried a lot of configurations, for the router and the adaptor. I tested the original driver and Microsoft's newer driver. In the best configuration, the internal WIFI of the laptop can negotiate 1.5Gbps, which was obtained only by setting the router's Channel Width to 160Mhz. In every configuration, wifi link speed using T9UH is 866Mbps.
I am out of ideas to test, please help, how can i get the 1.3Gbps link speed with the T9UH?