What rank? I've felt a huge difference in competition at 2500+. 10k to 5k wasn't bad, but the moment 2500-3000 and consistent 300pp plays just to maintain it hit I felt the burn.
I don't grind PP, Never got into that scene. I've just been working on songs, and as it stands I can't crack Expert+ Ghost, Light it up, and Spin Eternally. That seems to be my limit.