Portenta H7 basic wifiserver

Trying the basic wifiwebserver.ino server from wifi.h , the client server is responding 1-3 times ok, then its utterly slow ,and not responding at all.

Using bootloader 24, Boardmanager Mbed OS 3.5.1, Wifi Arduino library 1.2.7
wifi.h_github

Searched for similar problems, but could not find a solution.
There are same problems reported in Spring 2022, but these should be solved with the latest Mbed OS.

Why do basic example like this not working properly out of the box ????