Hello Martin Triska,
I clearly understand that a Wifi connection in a metal enclosure, close to an LTE modem is not great and that it could affect performances. Even if here, I am not using LTE and I disabled the module to be sure about that. The problem is clearly not a performance issue. Even if the connection was unstable or lost, the on board Wifi adapter is not supposed to fail like that. This is clearly an hardware bug/fault, independent of Wifi performance. The message log "brcmf_sdio_firmware_callback: dongle is not responding" is quite clear about that.
Also, where do you explain in your catalog that this Wifi adapter is designed for occasional service or initial setup ? We were clearly not aware of that before buying them.
Regarding the quantity of Neurons/Axons we are using, I was excepting a better support than your answer. Sorry, I had to say it.