I see. Is outputting the RMII clock from ESP an experimental feature on all pins or only on IO0? On menuconfig it seems to state that's only the case for IO0. I'm using IO17 and having disconnects when wifi is enabled

Hi, I'm having the same problem with almost the same setup, just using IO17 for the clock instead. I've tested with wifi sta and ap modes and both make the ethernet disconnect.
Have you tested using an external oscillator? Or found what the issue was?