djay for iPhone freezes when is on Automix or 2 decks mode

If I am running automix o mixing with a large track, djay freezes or stops sound. I have been testing with tracks locally synced or from beatport.
Sleep mode enters after 5 minutes. Should be a problem?
Load protection on decks are Activated so probably in automix mode cannot load the next track. I’m observing last days that when you are in automix mode and press the next song or
In your headphones press twice to get the next track, in the app you can see the message “track deck protected”. Probably some tricks?

Someone had the same issues ?
Thanks in advance

iOS 13.7

Version 3.5.5

  • Improved Beatport track loading
  • Fixed SoundCloud library not showing all liked tracks
  • Various bugfixes and improvements