Does including location and age in an ad request make any difference?

In the last 3 weeks I have been experimenting with including the date of birth and location of my app user in all the ad requests for admob but I am not seeing an improvement in RPM. It more or less stayed the same.

Has anyone seen seen any improvements when including age and location in ad requests?

I think only tier 1 countries benefit from that type of data due to the array of ads shown.
With that said, I’ve never had any noticeable results.

If you mostly have U.S traffic for example, I would imagine you’d see a decent increase in RPM.

My users are 65% US, around 25% EU and around 10% rest of the world. But I haven’t seen much difference