Hello there 
appart from giving a massive boost in fps and battle speed, rev1986 also fixes sepiroth's and cloud's hair loss so good job devs
EDIT: Dante's Inferno should be added to the playable list, since you can play it but with 2-4 fps
EDIT#2: @darkcloudl : no they just give better graphics but massively decreased FPS. Sometimes those options even remove some of the textures from dissidia (out of memory I think)
appart from giving a massive boost in fps and battle speed, rev1986 also fixes sepiroth's and cloud's hair loss so good job devs
EDIT: Dante's Inferno should be added to the playable list, since you can play it but with 2-4 fps
EDIT#2: @darkcloudl : no they just give better graphics but massively decreased FPS. Sometimes those options even remove some of the textures from dissidia (out of memory I think)