Yep!
I mentioned that here earlier
http://www.subsim.com/radioroom/showthread.php?t=108195
It made quite a difference.
I suggest people with LCDs having bad blurry graphics turn VSync on. It's not perfect but is a big leap.
Before I did that, I actually had my first Motherboard monitor warning I've ever seen on the 3.3V power supply rail. Over Voltage. Yikes.