--- > ( Windows 7 Home Premium, 64-bit,GeForce GTX 260 )

No Flicker :
r_PostMSAA = 0

Better Textures :
r_TexMinSize = 2048

I start Crysis 2 with a Shortcut :
"C:\Program Files (x86)\Electronic Arts\Crytek\Crysis 2\bin32\Crysis2.exe" +con_restricted=1 +r_displayinfo=1

but con_restricted and r_displayinfo does not work !?!

I have my autoexec.cfg here : C:\Program Files (x86)\Electronic Arts\Crytek\Crysis 2
and here C:\Program Files (x86)\Electronic Arts\Crytek\Crysis 2\bin32

My autoexec.cfg :

con_restricted=1
r_displayinfo=1
g_skipIntro=1
g_enableInitialLoginScreen=1
cl_bob_Hud=0.1
e_WaterWaves = 0
r_MotionBlur = 0
r_MotionBlurShutterSpeed = 0.001
r_Glow = 0
r_GlowAnamorphicFlares = 0
e_MaxViewDistSpecLerp = 2
r_UseEdgeAA = 0
r_HDRGrainAmount = 0.125
r_HDRBloomMul = 0.1
r_HDRBrightLevel = 0.125
r_AnisoMax = 4
r_SSAO = 4
r_SSAOAmount = 0.6875
r_SSAOContrast = 1.5
r_SSAODownscale = 1
r_SSAORadius = 1.75
r_SSAOTemporalConvergence = 0.7
e_Shadows = 2
e_ShadowsAdaptScale = 1
e_ShadowsCastViewDistRatio = 1.5
e_ShadowsCastViewDistRatioLights = 1.25
e_ShadowsMaxTexRes = 1024
e_ShadowsResScale = 3.4
r_PostMSAA = 0
r_PostMSAAEdgeFilterNV = 1
r_PostMSAAMode = 2
r_TexMaxAnisotropy = 0
r_TexMinSize = 2048
e_TerrainNormalMap = 1

Can we see screenshots?

Update 1.4 makes your .cfg pretty much useless, since it disables pretty much all commands. If that is your problem?