I tried setting it to 1 as well, and it worked for about a week.
This evening I noticed severe graphical glitches (application topics glitching, as well as large gray areas flashing on the screen). The glitches began after a reboot after installing updates for three applications, I think they were tweakr, fmms, and cpumem-applet.
After I set it back to 0 everything went back to normal.

Maybe I'll try it again later.