树莓派4B的wifi5速度

树莓派连接5Ghz wifi，测速速度跑不满百兆

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   102 MBytes  85.8 Mbits/sec

参考此贴：

I just cannot figure out why my Pi has such lower wifi download speed - around 65 - 75 Mbps, measured with speedtest-cli. It is connected to a 5GHz SSID. It is a new Pi model 4B 8GB RAM with an original power supply. It has Ubuntu Server 20.04 installed just a day ago and it does not run any applications. I get from my ISP 700 Mbps when connected with Ethernet cable, and between 400 - 600 Mbps from all other wireless network devices but not from the Pi. I searched for a solution and to identify the issue but I can't find it. What should I do? Thank you very much for your help and advise.

"I am expecting a speed in the same range as the other wireless devices on the same 802.11ac network - around 400-600Mbps"

This is impossible! 802.11ac might be able to reach these speeds on a good day with the wind behind it but only on suitable hardware - that means multiple antenna MIMO.

The tiny single antenna on the Pi4 will never get close; the best you could expect is 150Mbps on a 5GHz network. MagPi benchmarks show 114 Mbps.

NOTE speedtest-cli is not a reliable method of testing WiFi - it is an end to end test of internet.