EAP615-Wall; OpenWrt or Stock?

This morning I ran a number of tests with OpenWrt firmware on EAP615.
Tomorrow I will run same with OEM stock firmware (provided I succeed in installing this)

Test equipment

router   - RPi4
switch   - 8x 1Gb port
accesspt - EAP615 placed outside house in shed at 2m height
server   - Ubuntu 24 running iperf3 -s -D 
laptop1  - Ubuntu 24 with Intel AC8265 802.11n/ac 
laptop2  - Windows11 with Intel AX211  802.11ax
phone    - iPhone11 802.11ax

Tested channels

ch1  2.4Ghz, 20Mhz, 20 dBm (100mW)
ch36   5Ghz, 80Mhz, 21 dBm (125mW) 
ch100  5Ghz, 80Mhz, 21 dBm (125mW)

Used apps

$ xhost +local:docker 
$ sudo docker run --net="host" --privileged --name survey -it --rm -v $(pwd):/pwd -w /pwd -e DISPLAY=$DISPLAY -v "$HOME/.Xauthority:/root/.Xauthority:ro" \
jantman/python-wifi-survey-heatmap wifi-survey -i wlp2s0 -s <host> -p floorplan.png -t ch1
$ sudo docker run -it --rm -v $(pwd):/pwd -w /pwd jantman/python-wifi-survey-heatmap wifi-heatmap ch1