Hello Felix,
thank you for your quick answer. I can ping sometimes and I cann't surf the Internet with my phone or with my computer and eth2ap-modul.
I have changed the channel the softAP is using. Small changes in quality can be seen, but no significant improvement.
I tried a different wireless client, for example my computer and my phone.
I used a 12V/3A power adapter on LAN-Module with W5500. The M5Core2 and the LAN module also run stably with other applications and the same power supply.
Bye,
Uwe