I've struggled the last few days with my routerboard. When I connect to the routerboard with my notebook and do a speedtest, means I saturate the DSL connection (50Mbit/s), the WLAN on the routerboard is crashing. CPU goes to 100%, all clients are disconnected. When I disable and enable "wlan1" the problem is solved. With moderate traffic this does not happen.
In system/resources/pci I can see 00:1:00/00.0, Atheros Communications Inc., unknown device (rev: 0).
Firmware and packages are up to date on the release channel. I've also reset the configuration on the "wlan1" and recreated it.
Does this mean, that this device is broken?