A wireless engineer is hired to troubleshoot wireless network issues and discovers that the customer is using 802 11 ac access points with 80 MHz-wide channels in a high-density environment. Which…

Disabling RRM removes automated channel and power management, eliminating the mechanism that dynamically avoids interference - this would worsen conditions in a high-density environment.

Disabling TPC prevents automatic transmit power reduction, potentially causing neighboring APs to overpower each other and increase co-channel interference rather than alleviating it.

Decreasing the channel width from 80 MHz to 40 MHz or 20 MHz increases the number of non-overlapping channels available in the 5 GHz band, reducing co-channel interference between neighboring APs. In high-density deployments where many APs operate in close proximity, narrower channels allow more APs to transmit simultaneously without colliding, improving aggregate throughput.

Increasing the minimum data rate improves airtime efficiency by disassociating low-rate legacy clients but does not address the co-channel interference caused by excessively wide 80 MHz channels.