Yes it is slow as hell, that is at 1400RPM and PTO speed is approx 2200RPM I believe. Increasing throttle beyond 1400 makes it cycle only slightly faster and isn't worth the extra wear and fuel burn in my opinion.
It's what I have and it works fine for me, I'm not in business it's just personal use.
When we first moved here it was firewood. My ancient Ponderosa pines are 24" to 36" on the butt. I tried a splitter maul - ABSOLUTELY no go. I looked at a 3-point splitter and a stand alone splitter. I chose the stand alone splitter. I could get the stand alone low enough to the ground that I did not have to lift the rounds. Dig a shallow trench with the bucket - roll the splitter into this trench. The splitter was then just about the same height as the ground.
For the first ten years or so - five full cords of firewood every year. Then we went to pellets for the next fifteen years or so. Now it's electric heat.