Board Thread:Theories and Speculation/@comment-5705606-20170917112600/@comment-25122992-20170917113045

I think the sentence rather means that after the seal's formation the user doesn't have to store up the chakra for it anymore, which allows them to use their chakra and its control to the fullest potential. Technically, we've already seen it in practice with Sakura during the clash with Ten-Tails mini-clones - when the seal was complete, she didn't have to pull up the power of her punches anymore.