This was said by Madlen,
Some more information about Hidden Treasures in general:
• You might wanna attack players of a similar strength to get the most out of your raids.
• There are not endless Hidden Treasures per day…. (This only applies to Hidden Treasures from normal battles, not Rune chests).
So there is a limit. I have treasure perks for 37.1%. Does this mean i get 37% more treasure than someone who doesn’t have perk, or with less battles i get my daily limit of hidden treasure.