I haven't tried this fps tool.
But I'd like to break some misconceptions about fps.
I have two monitors.
1: a lcd that has a 60hz refresh rate. And that has ghosting and lag. ( inherent to the lcd technology)
2: An old crt that I use for soldat. It run it in 640x480@120hz
I made some experiment with my crt screen.
And I can confirm there is a huge difference between playing at 60hz or at 120hz.
So much that I kept this screen only for playing soldat.
I really wonder why so much people claim that the human brain can't notice framerates over 60hz.
That's so wrong!
Second thing: if you play in windowed mode instead of full screen.
It will bypass the v-synch.
So as soon as a frame is generated by your computer it will display on your monitor.
(That's what cause the image tearing effect)
Your monitor will begin render the frame even if it hasn't finished rendering the last one.
That's why even if your monitor is limited at 60hz refresh rate, it still makes sense to have your computer generate more than 60fps.
The more fps, the less delay between what happens and what you actually see.
Thank you for reading.