>I understand that, but if you have vsync there is already no tearing, and with a 144Hz refresh rate your lag is at most 1/144th of a second, or 7ms, and on average 3.5ms - I don't think that's something noticeable.
If the game never drops below 144 then it's not going to be very noticeable, still get extra performance of having vsync off and lower latency though. Even if you could run something that fast, though, it would likely be better overall if you could run it slightly less fast but with higher quality lighting model enabled or whatnot.
And so another way of looking at is: this lets you run at high quality than before, resulting in lower framerates of 30 - 60, because the negative effect of those lower frame rates between 30 and 60 is so minimized.
If the game never drops below 144 then it's not going to be very noticeable, still get extra performance of having vsync off and lower latency though. Even if you could run something that fast, though, it would likely be better overall if you could run it slightly less fast but with higher quality lighting model enabled or whatnot.
And so another way of looking at is: this lets you run at high quality than before, resulting in lower framerates of 30 - 60, because the negative effect of those lower frame rates between 30 and 60 is so minimized.