Question about ESP8266 and WiFi encryption issues

#1

Navigating through old forum posts I found out that there were issues related to memory usage due to ESP8266’s short built-in memory.

I have a working firmware developed that seems to do just fine with WPA2-Personal encryption, even tough sometimes Core-Dumping occurs, most of the time it connects to AWS IoT-Core and performs all desired functions.

Now, when it goes off to an enviroment out of my control (e.g. Client’s House) I was wondering if there are any concerns related to the WiFi settings. Were those issues fixed for ESP8266?