Why does my HTC One with Sense 6.0 take so much time until it shows the available Wi-Fi networks?

[AC Question]

My HTC One with Sense 6.0 takes time until it shows the available Wi-Fi networks

The screen stays black and, after some time, a message shows up saying that the the android is not responding (I use Android version 5.0.2). Then, after some more time, finally, the screen showing the Wi-Fi networks do appear and I can choose one to connect.

 

[DLK1]

Re: My HTC One with Sense 6.0 takes time until it shows the available Wi-Fi networks

Did this just start? Or did this start after you upgraded from KitKat?