Setting a fixed Wifi TX Power

[thing20]

I have an application which has the ESP32 in AP mode and requires good Wifi performance at a range of a 3-5 meters to tablets, laptops, and general computers. I have my application running nicely but I'm finding over time, the Wifi TX power decreases to a point the link between my two devices is degraded with poor throughput. I've changed the "Max WiFi TX power" setting in the PHY section of the menuconfig to MAX (20dBm) which makes a nice strong signal when first booted but still over time the Wifi power drops. I assume this dynamic WiFi TX power is an Energy conservation approach but I don't have any battery power issues to consider because I'm powered by the wall. So is it possible to disable this dynamic WiFi TX power algorithm to keep the same RF output over time?