@mgb_uk This seems to be an endemic problem. I just returned an EAP670 for the same reason. TP-Link devices have very limited diagnostic capabilities, making it extremely difficult to troubleshoot...

In trying to troubleshoot device crash and client connection problems, I enabled rsyslog on the EAP670. If I leave "More client detail log" disabled, it appears little to nothing gets logged....

I've already decided to return my EAP670 and buy another brand, but am posting this in case it helps anyone. One of the issue I've been having is clients disconnecting "permanently". I thought this...

@MR.S I've wasted entirely too much time on this. I have tried simplifying the topology, changing cables, using the power adapter, etc. and still have stability issues. What bothers me most is the...

For your perusal, the output of dmesg on the EAP670, showing what I think are the failure events (at the bottom). I was going to just include the text here, but your system says " Content or title...

@MR.S OK, I reduced the topology to the following: Internet----pfSense----TrendNet TEG-S380 2.5g non-POE | | | ...