Latest nightly I found seems to work, built from source and installed klipper, etc using normal instructions online. Klipperscreen is not working but I believe I will need to build the full graphical version to get this working with my Waveshare 7" hdmi screen.
Wifi and general usage of this build seems very stable.
Note: I did that the lagtest ngihtly code PR for CB2 was months old, but again, it seems to work.