You haven't really told us much other than your devices disconnect and that you dont know why the SSID was set for L3 roaming. Definitely open a ticket with Meraki... you are paying for that service. Consider the possibility that the AP is defective.in that one area. Meraki can help you with that. Just some observations from reading through what is above. You have your 5 GHz channel width set to auto. Unless you are in a cornfield in Iowa, all alone, Push that channel width down to 20 MHz wide lots of DFS channels in ETSI domain.... The lower you go on channel width should make your SNR and noise floor more appealing for clients. Check to see which freq has more issues. 2.4 or 5GHz. Personally I would get rid of the 2.4GHz all together, if you can. The 2.4GHz band is a literal minefield of garbage devices that cause far more issues and help desk tickets then its worth, IMO. If you are doing PSK you can eliminate the 802.11r without much worry. Even in adaptive mode it can cause issues. Intel Macs are way different then M1 based MACs from a wireless perspective. Also, the roaming threshold for iOS and MacOS devices differ greatly. Also, depending on which version of MacOS you are running, Apple has a really tough time recycling sockets used by anything they didn't publish. i.e. third party extensions, When you run out of sockets, you will not have a good time. You can mitigate this issue by upgrading to latest MacOS but i would also tell your Mac users it is a really good idea to properly shut your machine off instead slamming the lid closed and dropping it in their bags. Actually shut it down in the evening and boot fresh daily will make sure the sockets are properly recycled https://support.apple.com/en-us/HT202628 https://support.apple.com/en-us/HT206207 .
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