or whatever value you like.
A dev told us that. Not much point in setting it a lot higher than your monitor refresh rate other than to see what your rig is capable of.
V-sync tries to match you monitor refresh and fps to help stop tearing but it can also introduces movement latencies that make your mouse movements feel sluggish and disconnected. I prefer it off but with a hard cap of fps with the t.maxFPS to stop my gpu running to crazy fps in the menus.