Ok, i can confirm that is the issue, because i count how many seconds between beeps and freezes, and its exactly 10 seconds. It only happens if theres nothing "new" to read, for example, in middle of a battle were nobody is speaking... as long as someone is speaking, or playing a video, etc, the issue doesnt happen.
I tried using a version before that 215, but it doesnt recognize my drive for some reason, so in the meantime i think i will need to play the game with a SD card... i just hope that this is not that common with other games... because this is the first game i try with nintendont and this happens....