What do you mean by 'horrible' 'terrible' and 'awful'? You're not really giving anyone a clue as to the problem.
Is it the seating position, does it feel perched, is it nervous, does the suspension feel wooden & not wanting to go into its travel, or does it bob. What length are the forks, what sag do you run up front, does the front and rear work together or feel detached from each other and see-saw? How much sag are you running, what is the shock tune (should say on the air can), does it rattle, are the bushes new or well worn, did you buy the prophet frame 2nd hand, has it been crashed, is it straight?
In my experience, Prophets are great do it all with decent suspension akin to an Orange 5. The basic Float R isn't always the best and should have its compression/rebound factory set tune to match the frame. I had a Nicolai Helius FR with float r that just wouldn't go into its travel and took 30 seconds to reach its sag when sat stationary. It felt horribly wooden on the trail. It turned out to be a combination of sticky/over tight bushes and mounting hardware, and wrong compression tune (it basically needed no compression damping at all). It was sent to Mojo who set it up specifically for the bike and sent a new set of mounting hardware and it worked fine after that.