@Krytern
That's a good question. The configuration exists. I read that the sd_overclock has to be a multiple of the core_freq, otherwise it will choose the next highest factor.

@hellska said in Dynamic IP address 'not stable':

The power supply is 2Amp, is it weak for the WiFi to function properly?

@hellska It probably depends on what else you have attached to you RPi, but the specs for RPi3 say 2.5A is recommended.

Your issue reminds me the behavior of my RPi1 with an external Wifi dongle. I never confirmed it was caused by insufficient power, but the fact was I had a poor 1.5A power supply back then. Using scp (which is consuming bit of CPU btw) was causing my Wifi to disconnect many times.