@symbiotic_ic Looks like roaming between 2.4G and 5GHz (channel 11 and 48). Do you've band steering enabled? I didn't, maybe that's giving the issues you see.

@WilcoV 

Thank you for the suggestion.  No, I don't have band steering enabled, but that's a good observation.  But I think @Fae believes my issue is simply the same as this one.

Dear @Fae,

 It's a different problem, has been discussed here.

 

Thank you for your response.  I'm glad that my problem isn't a new issue then.

@Philbert  @symbiotic_ic @Fae issue has been solved. My EAP245 were mounted to the wall, and now on the ceiling. The coverage is much better right now. It's still strange that a device switches so fast if it sees more than 1 good AC.

See also https://community.tp-link.com/en/business/forum/topic/159755

Thanks for your help

@WilcoV 

Hey

Can I just confirm that it was the orientation (Wall vs Ceiling) that caused the roaming?  Did this decrease once ceiling mounted?  Apart from logs filling, did it cause any issues or effects on the client?

Only ask as about to add a 3rd AP and its going to be Wall mounted, others are ceiling.

@WilcoV 

One fun thing about WiFi is that the client gets to decide when to roam.  iPhone roaming is a science.  Fortunately for us, it is a pretty well documented science.  I would point you towards Apple's own write-up on the topic.

As a side note, I would recommend you consider turning down your power on your APs.  A conversation is no good when one person is shouting (the AP), and the other is whispering (the iPhone).  I'd recommend 16dBm for iPhone compatibility based deployments.  There are a lot of articles explaining why.