I haven't played pen and paper D&D in more than 20 years but when I did, I was definitely in the 91%. We did a couple of campaigns where we got up to level 18-20 or so but I found that I got the most enjoyment out of the game when the characters were level 4-8 or so. Once they got above level 10, the gameplay fell pretty flat as magic users and clerics pretty much dominated the gameplay and things became very uneven. For fighters especially, combat seemed to devolve into a dice chucking grind with saving throws replacing HP damage as the only real threat.
We've were dabbling at RPGs again just prior to COVID (hopefully we can get things going again soon) but we went with The Dark Eye rules system and the Warhammer FRP world.