I propose to Revert the setting to cap it at 5 Ads/Hour instead.
Alternatively, Brave could fix the inconsistency of the ad frequency. If users want to have 10 Ads / Hour, they should get 10 Ads/Hour, and not a random value between 0-10 Ads/Hour.
I know the devs have said the inconsistent frequency was “intended”, but I don’t understand why it is so.