Large TAF file stop playing

I generated a large TAF file with 60 chapters and a playing time of 372 minutes. I linked this file to a creativ Tonie. Now I have the problem that playback stops at chapters 30 and 42. Afterwards I have to do a freshness check so that it can continue running again.
The TAF file was generated without errors and also runs in the Teddycloud player without any problems.
What could be causing this problem? Internal memory card 8Gb full?

This shouldn’t be a problem. Do you have an error message? What does the teddyCloud logs say during the download?
Does the download finish successfully?

There was no error message. I think there was a download or wifi problem as I can’t reproduce it now.