-norestrictions -nomemrestrict -availablevidmem 0.6 -percentvidmem 50 -frameLimit 1 -refreshrate 60 -forcehighquality 0 -renderquality 0 -shadowquality 0 -reflectionquality 0 -waterquality 0 -texturequality 0 -noprecache -novblank -minspecaudio -memrestrict 209715200

Before touching the in-game menu, you need these community fixes to stabilize your frame rate: