There is a problem with tts google voices. In android radio they are quiet, the switch to increase the volume of speech after the update of the google tts application does not work. There was a problem before, but it was sporadic enough that it was possible to live with it. Now, when I turn on the switch, after downloading the sygic application, the switch to increase the volume of speech stops working. I would like to point out that I do not download the google tts application update, after downloading the switch does not work. Radio dudu7, dudu os 3.6 beta3. Of course, for software tests I always do a factory reset, although it is not required. I also noticed that the Google TTS application has a bug, in the newer updates the increase TTS voices switch from Google does not work. If we have a phone the situation is the same. The switch only works in the application that is installed after installing the software, only that the TTS voices in the phone can be heard well and it does not affect the fact that in the new TTS updates the switch does not work.