Plutonium T4 crashes when trying to turn v-sync off

[tenmei]

I'm setting my preferred graphics settings and when I want to turn "Sync every frame" from "yes" to "no," then hit "apply," the client crashes. I've tried this multiple times to no avail. Can I change this in a config file?

[Xerxes]

Change r_vsync to 1 in your config file to enable it agin.

[wyattaug]

How to get there?