What rpm are you starting out with? Is the clutch slipping? Do you smell anything like a burned clutch? Any sign of oil dripping from the bell housing? How do you know the brakes are not stuck?
What are you talking about regarding "...high rpm to get moving..."? Idle is about 700-800 rpm So what does it take to get you moving? max rpm is ~ 2200rpm so you have between say 800 to 2200 rmp working range.