Is anyone running the Raspberry CM4 + DFRobot router board? I've found a few older threads (linked below) but nothing within the last year or so. A few questions come to mind.
https://forum.openwrt.org/t/dfrobot-router-cm4-no-r8169/110170/20
I've run a 1GB RAM CM4 Lite (no wireless) on a DFR Routerboard for testing but don't run it permanently because I don't have a satisfactory enclosure for it and I'd need an extra switch. It was as stable in my testing as a v1.1 Pi4 (2GB) + UE300 I also tested with somewhat better performance (enabling rx packet steering helps both considerably but the DFR setup is the better performer).
My iperf3 testing showed that the Pi4 (CM4/DFR or std/UE300) has an aggregate bus throughput limit somewhere in the vicinity of 1.1-1.2Gbps - it works up to nearly 1Gbps in one direction (either up or down) but can't handle bidirectional traffic at more than 1.1-1.2Gbps in aggregate 
though I won't claim my testing covered a wide variety of bidirectional traffic patterns. The limit may be due to an inability to distribute the various interrupts to all cores (IIRC only eth0's IRQ could be re-assigned for both setups).
I chose to stick with SquashFS images because I was using SD cards and I didn't want to deal with fsck'ing ext4 filesystems if I had a power problem. The builds I was testing with were based on 22.03.5.
Thanks for the detailed reply! Did you build your own image or use the DFR provided fork?
I also have a CM4 Lite with a DFRobot router board. Been using it for more than a year as my daily driver, no complaints. I'm using it with a GS308T switch, also with OpenWrt. Right now I'm using the 23.05.0-rc1 built with the firmware-selector, to add the kmod-r8169 package.
Thanks for the info.
I built my own image.
following, parts should be here in a week