@bakedbugaboo Since switching 5GHz to 80 MHz permanently, it's been rock-solid.  Also had 2 or 3 firmware updates since but haven't switched 160 MHz back on as didn't really see any performance benefit anyway.

  @srbs73 

i am currently at version 1.3.2 and exclusively on 160Hz I see no drops whatsoever and connection has been pretty solid.

This has been the case since version 1.2.8, now I am not entirely sure what the issue was but I moved from the India firmware to US firmware for the same hardware version and not had any issues, so could be that.

I had a similar issue with packet drops and connectivity issues in general. Before I returned my units I downgraded to the UK 1.2.2 firmware version and everything seemed stable here. My xe75s were in a mesh with 3 xe75 Pros so your mileage may vary. 

  @bakedbugaboo Switched on 160 Mhz and been stable for the last 24 hours.  Will see how it goes this week.  I'm now on fw 1.2.9.

  @bakedbugaboo Well, did't make it throught the second day :)  As I live less than 10 miles from Stansted Airport, I think it must be picking up the radar and switching back to 80 Mhz. Still okay with it now though as it's much more stable on 80 Mhz than when I first got it.  Performance is still very good even if I can't get that extra 10-20%.

Thanks all - very useful. I have been hardwired for the last few days as needed the stability.  I have dropped to 80MHz and will do some testing shortly and feed back.