Try this, it should help you out
//Casey's Source Config
//Updated 12/18/05
// _Set netcode settings_
// _adjusts hitboxes and netcode settings for optimal registration_
cl_cmdrate 101
cl_interp 0.01
cl_interpolate 1
cl_lagcomp_errorcheck 1
cl_lagcompensation 1
cl_updaterate 101
cl_smooth 1
rate 25000
// _Set graphics settings_
// _adjusts graphics settings to boost framerate_
cl_ejectbrass 0 // _disables shells flying out of guns_
cl_forcepreload 1
cl_phys_props_enable 0 // _disables trash and cans etc_
cl_phys_props_max 0 // _disables trash and cans etc_
cl_radartype 1 // _solid radar_
cl_ragdoll_physics_enable 0 // _disables dead bodies_
cl_show_splashes 0 // _disables splashes when in water_
fps_max 101 // _caps FPS_
mat_bloomscale 0
mat_bumpmap 0 // _disables bumpmapping_
mat_clipz 0 // _lowers water quality_
mat_fastnobump 1 // _faster bump mapping_
mat_fastspecular 1 // _fast specular lighting_
mat_mipmaptextures 1 // _texture quality decreases with distance_
mat_hdr_enabled 0 // _disables high dynamic range lighting_
mat_hdr_level 0 // _disables high dynamic range lighting_
mat_picmip 2 // _lower texture quality--set between 0 and 2_
mat_specular 0 // _disables specular lighting_
mat_trilinear 0 // _disables trilinear filtering_
mat_wateroverlaysize 16 // _lowers water quality_
mat_vsync 0 // _disables vertical synchronization_
mp_decals 50 // _how many bullets etc will be shown_
muzzleflash_light 0 // _disables muzzleflash_
r_avglight 0 // _disables average lighting_
r_cheapwaterend 1 // _worse water rendering_
r_cheapwaterstart 1 // _worse water rendering_
r_decal_cullsize 2 // _lower texture quality at distance_
r_decals 0 // _disables player sprays_
r_drawdetailprops 0
r_drawflecks 0// _disables bullet impacts_
r_drawmodeldecals 0 // _disables decals on models_
r_dynamic 0
r_eyes 0 // _removes eyes from player models_
r_lightaverage 0 // _disables average lighting_
r_lightinterp 0
r_lod 3 // _adjusts model quality--set between -5 and 5_
r_occlusion 0 // _disables occlusion--lowers image quality but gains FPS_
r_propsmaxdist 100 // _lower object fading distance_
r_renderoverlayfragment 0
r_rootlod 2 // _lower overall game detail level_
r_shadows 1 // _set to 0 to disable shadows (not recommended)_
r_teeth 0 // _removes teeth from player models_
r_waterforceexpensive 0 // _disables high-quality water_
rope_averagelight 0 // _disables average lighting on ropes_
rope_smooth 0 // _disables antialiasing on ropes_
rope_subdiv 0
rope_wind_dist 0 // _disables wind effects on ropes_
// _Set processing settings_
// _transfers load from GPU to CPU to boost performance_
r_3dnow 1
r_mmx 1
r_sse 1
r_sse2 1
// _Set audio settings_
// _corrects audio synchronization_
snd_mixahead // _adjust in intervals of .1 to reduce stuttering_
// _Set violence settings_
// _increases blood to help you see hits better_
violence_ablood 1
violence_agibs 1
violence_hblood 1
violence_hgibs 1
// _Other settings_
budget_show_history 0
cl_crosshairalpha 999
cl_crosshairusealpha 1
jpeg_quality 100
sv_forcepreload 1
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