I haven't seen a way but try checking with support. They may have something on the backend.
Snippet from the documentation regarding DTIM assuming you mean the same thing.
"The client requests the access point to transmit the required multicast packet as unicast frames. This allows the client to receive the multicast packets that are ignored in sleep mode and also ensures Layer 2 reliability. The unicast frame is transmitted to the client at a potentially higher wireless link rate, which enables the client to receive the packet quickly by enabling the radio for a shorter duration, thus saves battery power. Since the wireless client does not wake up at each DTIM interval to receive multicast traffic, thus allows longer sleeping intervals."
Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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