https://community.meraki.com/t5/Wireless-LAN/MR-27-4-released-plenty-of-fixes/td-p/94876 Bug fixes: Interoperability issue with Dynamic SMPS on certain Intel clients would result in poor performance (802.11ax MRs) I'm running 27.5.1, so it should include this fix. But this issue sounds very similar. Our clients were set to Auto SMPS not dynamic. But we do have 802.11ax MR56s.
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