We have issues with MR 31.1.7.1 firmware too. Clients do not roam easily and are stuck with the AP, and despite being in the same spot, they keep getting jumped from one AP to another. There is a stability issue with the current firmware. We are using only 5 GHz with a transmit power of 10-18 with auto channels on MR56. Planning to roll back on MR 31.1.6.
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