Lifts that use smaller (press/bench) or more (power clean) muscles will typically run out of 5lb jumps, unless you are humongous. My press is only going up 1lb a week, my snatch 1.5lbs, my clean 2-3lbs (I'm only 165lb, though). Progress is progress; don't have any shame in moving up slowly. Elite guys will spend 4 years increasing their cleans 10lbs... that's about 0.05lbs a week!
It seems that overall power cleans progress slower than other lifts. I used to increase by five pounds until I just couldn't progress. Now I micro load. Works for me.
yes they progress slower. I'm at 170 and I've been doing 2.5lb jumps since 135.