I just installed OpenWRT on my Raspberry Pi 4 (quad core, 8GB of RAM) and I'm noting that wired speeds are slower than I'd expect.
I have a gigabit cable connection and when I run this Speedtest performance script (https://openwrt.org/packages/pkgdata/speedtest-netperf) directly from the Pi I get around 850Mbps down. However, when I run an Ookla speedtest from my Macbook Pro via ethernet connected directly to the Pi, it's around 600Mbps down.
I know that's not too far off from the peak, but I would have expected it to be closer. What can I do to diagnose this?
Here's some of the specs:
Raspberry Pi 4 Model B Rev 1.4
Target Platform: bcm27xx/bcm2711
Firmware: OpenWrt 21.02.2 r16495-bf0c965af0 / LuCI openwrt-21.02 branch git-22.046.85957-59c3392
Kernel Version: 5.4.179
I'm using this TP Link UE300 for the WAN connection: