Random connection problems. Potential solution.

[AK-Homberger]

Hi together,
as many others, I had various connection problems (ESP8266, D1 Mini). The problems stopped after installing a fix made mainly for FritzBox WiFi problems.

#include <ESP8266WiFiGratuitous.h>
and "experimental::ESP8266WiFiGratuitous::stationKeepAliveSetIntervalMs(5000);" in Setup().

The fix keeps the WiFi connection stable. It fixed the problem for me. Perhaps you should give it a try.

Regards,
Andreas