Thanks to real-time you will be able to know when the prices have been updated, so you can force a new update by channel, hotel or dates for the Competitors functionality.

From Configuration>General>Real time

For example, in case you want to update all prices for hotels downloaded from booking.com, you can select booking.com and choose the period to update.

The period will be from the actual date to the future.

Finally, click Download to initiate it.

Note: it is necessary to have an hour of difference between one download and the other.