Couple of question with my new X20 3 pack running in access point mode:

The fast roaming feature that is available with a single access point seams to disappear when you have the 3 access points grouped together. I won't assume it's doing fast roaming automatically but how do I check?

Channels - This is bizar but I suspect I know the answer. All 3 units are aware of each other so they all use the same 5Ghz band - why? The optimizations option doesn't seam to do anything other than tell me its all fine with 3 AP's on the same channel (its not) and there is no manual setting of channels in the App or web interface. Any way to fix this? Not fussed about 2.4Mhz as its typically terrible.

I've just come from a D-Link mesh COVR 1870 and if you wanted very dumb and basic it worked. Anything else was a train wreck. Just being able to put the X20's in Access Point mode and they stay in it is awesome. There's also software updates which is something D-Link never did.