I've been playing this game since CH 1 first released and supporting it for almost 2 years now.
I was here when there WAS points you had to grind. Then it got reduced, then it got reduced again and finally, completely removed. Now you only have to see each scene once. You don't have to go to the bathroom or wash dishes multiple times, you just have to do it once. Hell, I don't think you even have to see those to progress anymore. You can skip them entirely.
if you mean, a scene has X/X seen. That's not grind. Every time you visit them, the story is progressing.