People probably think she hit her peak during the War Arc, but her chakra control has only gotten more refined. Remember when Sarada angered Sakura and caused her to instinctively use CES? Prime proof that Sakura can PERFECTLY control the chakra throughout her body without even being conscious of it. It's the chakra equivalent of using Ultra Instinct. With Sakura's body being like this, she can break any genjutsu the moment her instincts kick in. If Sasuke tried that Rinnegan genjutsu on her now, she'd reverse it, leave him in a vegetative state, then hand the leftovers to Ino.