Fine on my rig 6700k / 1080 GTX with following settings :
["graphics"] = {
["DOF"] = 0,
["HDR"] = 0,
["LensEffects"] = 2,
["MSAA"] = 0,
["SSAO"] = 0,
["anisotropy"] = 4,
["aspect"] = 1.7777777777778,
["chimneySmokeDensity"] = 0,
["civTraffic"] = "low",
["clouds"] = 1,
["clutterMaxDistance"] = 750,
["cockpitGI"] = 0,
["disableAero"] = false,
["effects"] = 3,
["flatTerrainShadows"] = 1,
["forestDistanceFactor"] = 1,
["fullScreen"] = false,
["heatBlr"] = 0,
["height"] = 1440,
["lights"] = 2,
["motionBlur"] = 0,
["multiMonitorSetup"] = "1camera",
["outputGamma"] = 1.4,
["preloadRadius"] = 100000,
["scaleGui"] = false,
["shadowTree"] = false,
["shadows"] = 1,
["sync"] = false,
["terrainTextures"] = "max",
["textures"] = 2,
["treesVisibility"] = 5000,
["useDeferredShading"] = 1,
["visibRange"] = "High",
["water"] = 2,
["width"] = 2560,
PD set to 1.5 via oculus tray tool.