Hey, here is the autoexec i made for myself, i used your tool for a basis.

. Added and tested that these work. The first part gave me quite a few bit of FPS.
g_skipIntro=1
r_MultiGPU=0
r_width = 1920
r_height = 1080
sys_physics_CPU = 3 (sets what CPU core to use physics on)
sys_physics = 1
sys_preload = 1
r_shadersAsyncMaxThreads = 4
r_TexturesStreamPoolSize = 256 (how many MB of ram to use when streaming textures on the fly)
es_UsePhysVisibilityChecks = 1
es_FarPhysTimeout = 4 (basically does not render physics thats past a certain distance which cant see)
sys_spec_shading=3
sys_spec_gameeffects=3
sys_spec_objectdetail=3
sys_spec_particles=3
sys_spec_physics=3
sys_spec_postprocessing=3
sys_spec_shadows=3
sys_spec_sound=3
sys_spec_texture=3
sys_spec_water=3
cl_fov=75
r_DrawNearFoV=75
pl_movement.power_sprint_targetFov=75
i_mouse_accel=0
i_mouse_accel_max=0
i_mouse_smooth=0
cl_zoomToggle=1
cl_crouchtoggle=0
net_packetsendrate = 30
cl_PacketRate = 60
cl_bandwidth = 50000
g_useHitSoundFeedback=1
r_motionblur=0
r_MotionBlurShutterSpeed=0
g_radialBlur=1
r_UseEdgeAA=0
r_PostMSAA=2
r_TexMaxAnisotropy=8
r_ColorGrading=1
r_SSAO=0
r_VSync=0
d3d9_TextureFilter=trilinear
sys_flash_edgeaa=1
r_HDRRendering = 1
r_HDRLevel = 1.35
r_HDRBrightOffset = 8
r_HDRBrightThreshold = 8
r_EyeAdaptationBase = .5
r_EyeAdaptationFactor = .45
r_HDRBloomMul=.6
r_HDRBrightLevel=.6
e_ViewDistRatio=100
e_ViewDistRatioVegetation=
e_VegetationSprites=
g_actorViewDistRatio=
r_sunshafts = 1
r_BeamsMaxSlices = 164
r_BeamsDistFactor = .05
r_shadowJittering = 2
r_ShadowBlur = 0 (no noticeably reduction in shadows, but gives a few FPS)
r_UsePom = 0 (textures are already flat so best to turn off, still dont know if it still affects Anisotropic filtering like Crysis 1)
r_VegetationSpritesTexRes = 64 (resolution of vegetation sprites, higher is better. Only use values like 32, 64, 128, etc)
r_waterUpdateFactor = .05
s_SpeakerConfig = 0 (0 = uses windows control panel option)
s_FormatSampleRate = 48000
s_MaxChannels = 64
s_FormatType = 3 ( 1, 2,3, or 4. Higher is better sounding quality. 3= PCM 24bit, 2 16bit, 4 = 32bit.)
s_MusicEnable = 1
s_Obstruction = 1
s_ObstructionAccuracy = 1
s_ObstructionUpdate = .1
s_SoundMoodsDSP = 1
s_VariationLimiter = 1
s_PrecacheData = http://www.mycrysis.com/forums/1 (Precaches all sounds on loading a level)
s_PriorityThreshold = 1
s_ReverbInstances = 1
s_ReverbType = 2
s_MPEGDecoders = 32
s_XMADecoders = 0 (usually 32 but resets to 0 for some reason)
Also, i do believe That any sys_spec variable is max of 3. 0 = low 1= medium = 2 high 3 = extreme. r_FSAA is an invalid command too.