Try to update the Intel firmware otherwise disable 802.11ax (Wifi 6)
I don't know exact what Intel firmware versions are affected, but there is a bug in the older Intel versions.Had a customer with the same issues when the 500 series were launched, disabling 802.11ax was a temporary solution until all the client firmware was updated.
You can unselect the 802.11 option "Very high efficient" for the cluster and check the affected clients.
The older APs do not have 802.11ax on board so this option do not affect those APs.
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