XML : RecyclerView item content gets mixed up

I've got a RecyclerView containing items with interactive content. Every item contains a textview that's being updated every 5 seconds, but when there are more than 5 items in the RecyclerView, the data gets mixed up.

By example:

Correct: | 1 - 100 |

| 2 - 283 |

| 3 - 382 |

When it gets mixed up:

| 2 - 283 |

| 1 - 100 |

| 3 - 382 |

It's kinda like that, it just gets mixed up.

This happens when I call de adapter.notifyDataSetChanged();