Espressif disabled that in the current library.

Yes. I've already reported the error.

That's what I thought. Okay, thanks.

That's good, and thank you for that krzychb. It explains a lot. But there's no information regarding the control and usage of the radio subsystem (sans enabling the clock for it). Is there a second document for that?

Is there a technical document of the internal control and communication of the ESP32 subsystems with the microprocessor(s)? For example, how is data transferred between the microprocessor(s) and the radio? DMA? And how is the radio controlled? Special registers? (Assuming this information isn't some...

Look here viewtopic.php?f=19&t=3017

Is it possible these are 802.11 frame retransmits (of either the frame you are sending or another queued frame)? My scope clearly shows all packets transmitted by the ESP32 on my desk, and I don't see any extra transmissions - only occasionally delayed ones. I'm toggling a GPIO pin every time I sen...

After a more detailed inspection, it appears that the radio time to transmit is sub-millisecond, but only when there's nothing else queued up for transmission. The large delay I was initially finding was only after several packets were queued up. I'm suspecting that there's possibly a delay between ...

cygwin (google it)

I would recommend using the WROOM module, not just the IC. To program WROOM modules, search eBay for "ESP32 test board" and get one. They're designed to slot in a WROOM module for programming.