I used a beautiful wooden Japanese grinder, Hario, because I loved its simplicity. But, same as you, it takes forever. And sadly, I didn't even know it was taking longer than usual as I didn't have a baseline. Try one of these linked below. You can knock out 30g in about 20 to 30 seconds.

https://www.amazon.com/gp/aw/d/B07ZNXQF4S