First, check out my guide on the Autoexec

Then, Copy/Paste everything in Italics below into your Autoexec.cfg

//Disable Ragdolls
cl_ragdoll_fade_time 0
cl_ragdoll_forcefade 1
cl_ragdoll_physics_enable 0
g_ragdoll_fadespeed 0
g_ragdoll_lvfadespeed 0
ragdoll_sleepaftertime 0

// Cleaning up and stopping debug flooding
adsp_debug "0"
cl_clearhinthistory "1"
cl_debugrumble "0"
mat_debugdepthval "0"
mat_debugdepthvalmax "0"
mat_debug_postprocessing_effects "0"

// Graphical
cl_burninggibs "0"
cl_detaildist "0"
cl_detailfade "0"
cl_drawmonitors "0"
cl_ejectbrass "0"
cl_muzzleflash_dlight_1st "0"
cl_ragdoll_collide "0"
cl_show_splashes "0"
func_break_max_pieces "0"
glow_outline_effect_enable "0"
lod_transitiondist "0"
mat_aaquality "0"
mat_alphacoverage "0"
mat_antialias "0"
mat_autoexposure_max "0"
mat_autoexposure_min "0"
mat_bloomscale "0"
mat_bloom_scalefactor_scalar "0"
mat_bumpmap "0"
mat_colcorrection_disableentities "1"
mat_colorcorrection "0"
mat_compressedtextures "1"
mat_disable_bloom "1"
mat_disable_fancy_blending "1"
mat_disable_lightwarp "1"
mat_envmapsize "0"
mat_envmaptgasize "0"
mat_excludetextures "1"
mat_fastnobump "0"
mat_fastspecular "1"
mat_filterlightmaps "0"
mat_filtertextures "0"
mat_forceaniso "0"
mat_hdr_level "0"
mat_max_worldmesh_vertices "0"
mat_mipmaptextures "1"
//mat_monitorgamma "2.0" // Controls brightness, try 1.8 to get it brighter or 2.2 to get it darker. Only works in fullscreen.
mat_motion_blur_enabled "0"
mat_non_hdr_bloom_scalefactor "0"
mat_parallaxmap "0"
mat_postprocess_x "0"
mat_postprocess_y "0"
mat_reducefillrate "1"
mat_reduceparticles "1"
mat_softwarelighting "0"
mat_software_aa_blur_one_pixel_lines "0"
mat_software_aa_blur_one_pixel_lines "0"
mat_software_aa_strength "0"
mat_software_aa_strength "0"
mat_software_aa_strength_vgui "0"
mat_software_aa_strength_vgui "0"
mat_software_aa_tap_offset "0"
mat_software_aa_tap_offset "0"
mat_specular "0" // Set to 1 for shiny ubers
mat_trilinear "0"
mat_wateroverlaysize "0"
mp_usehwmmodels "0"
mp_usehwmvcds "0"
muzzleflash_light "0"
rope_averagelight "0"
rope_collide "0"
rope_rendersolid "0"
rope_shake "0"
rope_smooth "0"
rope_smooth_enlarge "0"
rope_smooth_maxalpha "0"
rope_smooth_maxalphawidth "0"
rope_smooth_minalpha "0"
rope_smooth_minwidth "0"
rope_solid_maxalpha "0"
rope_solid_maxwidth "0"
rope_solid_minalpha "0"
rope_solid_minwidth "0"
rope_subdiv "0"
rope_wind_dist "0"
r_3dsky "0"
r_ambientboost "0"
r_ambientfactor "0"
r_ambientmin "0"
r_avglight "0"
r_bloomtintb "0"
r_bloomtintexponent "0"
r_bloomtintg "0"
r_bloomtintr "0"
r_cheapwaterend "1"
r_cheapwaterstart "1"
r_decalstaticprops "0"
r_decal_cullsize "0"
r_dopixelvisibility "0"
r_drawbatchdecals "0"
r_drawdetailprops "0"
r_drawflecks "0"
r_drawmodeldecals "0"
r_drawspecificstaticprop "0"
r_dynamic "0"
r_eyemove "0"
r_flashlightdepthtexture "0"
r_flashlightrendermodels "0"
r_flashlightrenderworld "0"
r_forcewaterleaf "1"
r_lightaverage "0"
r_maxdlights "0"
r_maxmodeldecal "0"
r_maxnewsamples "0"
r_maxsampledist "0"
r_minnewsamples "0"
r_physpropstaticlighting "0"
r_pixelfog "0"
r_radiosity "0"
r_renderoverlayfragment "0"
r_ropetranslucent "0"
r_staticprop_lod "4"
r_updaterefracttexture "0"
r_visualizeproplightcaching "0"
r_waterdrawreflection "0"
r_waterdrawrefraction "0"
r_waterforceexpensive "0"
r_waterforcereflectentities "0"
r_worldlights "0"
tf_particles_disable_weather "1"

// Misc
cl_predict "1"
cl_predictweapons "1"
cl_showfps "1" // Show unsmoothed FPS meter
cl_showpluginmessages "0"

// Performance
cl_forcepreload "1" // Preloads maps, may cause a few seconds more loading the map at the benefit of a more consistent FPS (because the whole map is preloaded)
cl_soundemitter_flush "1"
m_rawinput "1" // Uncomment to enable raw mouse input -- DO NOT ENABLE IF YOU ARE USING XFIRE OVERLAY
mat_bufferprimitives "1"
mat_clipz "1" // FX owners should set this to 0
mat_disablehwmorph "0"
mat_disable_ps_patch "1"
mat_forcehardwaresync "0"
mat_forcemanagedtextureintohardware "0"
mat_framebuffercopyoverlaysize "0"
mat_levelflush "0"
mat_maxframelatency "0"
mat_postprocessing_combine "1"
mat_vsync "0"
//r_fastzreject "-1" // Some ATI cards aren't autodetected, if you know that your card supports it, try setting it to 1.
r_hunkalloclightmaps "0"
r_lightcache_zbuffercache "0"
r_occlusion "1"
r_unloadlightmaps "0"
soundscape_flush "1"

// Sound
dsp_enhance_stereo "0"
dsp_slow_cpu "0" //HQ
snd_async_fullyasync "1" // Can help stop freezes and sound looping
snd_pitchquality "1" //HQ
snd_spatialize_roundrobin "1"

// Threading
cl_threaded_bone_setup "0"
cl_threaded_client_leaf_system "0"
mat_queue_mode "-1"
r_threaded_client_shadow_manager "1"
r_threaded_particles "1"
r_threaded_renderables "1"
r_queued_decals "0"
r_queued_post_processing "0"
r_queued_ropes "1"

mat_shadowstate "0"
r_shadowmaxrendered "0"
r_shadowrendertotexture "0"
r_shadows "0"

r_eyes "0"
r_flex "0"
r_teeth "0"
flex_rules "0"
flex_smooth "0"

cl_playerspraydisable "1"


r_lod -1
r_rootlod 2
mat_picmip 4
r_shadows 0
mat_specular 0
r_avglight 3
r_radiosity 4

cl_updaterate 67
cl_cmdrate 67
r_pixelfog 1

echo CUSTOM PERFORMANCE CONFIGURATION LOADED
echo CUSTOM PERFORMANCE CONFIGURATION LOADED
echo CUSTOM PERFORMANCE CONFIGURATION LOADED

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You can also lower your DirectX level for a big performance boost but you may have missing textures, etc.

Go to Steam, Library, right-click TF2 and choose Properties.

Select "Set Launch Options"


Place these in the box. You may need to change your "dxlevel", "refresh", "bit" and "heapsize" depending on your machine/monitor.

"-novid -console -dxlevel 81 -high -32bit -heapsize 3145728 -d3d -refresh 60 +exec Autoexec.cfg"

Click OK and Launch TF2