Don't get confused by the html code in the beginning. It's only implemented to control the strip with other devices than the smartphone. The problem occurs if i use my smartphone app. In the code of the app I can set the frequency of the send URL's if I use the implemented sliders. Trough playing around with this value I found out that the ESP crashs if the frequency is about 10 URL'S per second in accesspointmode and at 1-2 URL's per second in stationmode.
Greetings
Daniel