Something else to consider, there are a lot of people out there that have yet to see anything higher than their current FPS.
So if you're getting say 10-20 and you've never seen 30, 40, or even 60, then you have nothing to compare your's to. So as far as you're concerned, your's looks just fine. Trust me, once you've seen 60 or higher, you'll notice a significant difference.
I'm still amazed at how many people there are using PC's at work that have their refresh set to a default of 60 and don't even notice the flicker. Gives me headaches just looking at it.
- DL