Here's my config file below. I've got all my setting adjusted to the lowest possible, even lower than you can do by using the in-game menu. It really helps you frames-per-second, and makes the game much smoother. Look this over, and if it helps you, GREAT!
It was cool seeing you in there again. It's been too long. Keep an eye out for me and let me know when you're playing.
My Config:
unbindall
bind "TAB" "+showscores"
bind "ENTER" "+use"
bind "ESCAPE" "cancelselect"
bind "SPACE" "impulse 201"
bind "," "use weapon_shotgun"
bind "." "use weapon_357"
bind "/" "use weapon_physcannon"
bind "1" "slot1"
bind "2" "slot2"
bind "3" "slot3"
bind "4" "slot4"
bind "5" "slot5"
bind "6" "slot6"
bind "7" "slot7"
bind "`" "toggleconsole"
bind "a" "+moveleft"
bind "b" "use weapon_ar2"
bind "c" "impulse 50"
bind "d" "+moveright"
bind "e" "Use weapon_crowbar"
bind "f" "impulse 100"
bind "g" "phys_swap"
bind "h" "use weapon_rpg"
bind "m" "use weapon_smg1"
bind "n" "use weapon_crossbow"
bind "p" "jpeg"
bind "q" "quit"
bind "r" "+reload"
bind "s" "+back"
bind "t" "messagemode"
bind "v" "use weapon_pistol"
bind "w" "+forward"
bind "y" "messagemode2"
bind "z" "+zoom"
bind "ALT" "+duck"
bind "F6" "save quick"
bind "F9" "load quick"
bind "SHIFT" "+speed"
bind "MWHEELDOWN" "invnext"
bind "MWHEELUP" "invprev"
bind "MOUSE1" "+attack"
bind "MOUSE2" "+jump"
bind "MOUSE3" "+attack2"
bind "PAUSE" "pause"
g_antlion_maxgibs "16"
hud_quickinfo "0"
muzzleflash_light "1"
spec_scoreboard "0"
cl_playermodel "models/combine_soldier.mdl"
cl_defaultweapon "weapon_physcannon"
cl_team "default"
cl_class "default"
closecaption "0"
cc_linger_time "1.0"
cc_predisplay_time "0.25"
cc_subtitles "0"
cc_lang ""
crosshair "1"
cl_observercrosshair "1"
cam_command "0"
cam_snapto "0"
cam_idealyaw "90"
cam_idealpitch "0"
cam_idealdist "64"
c_maxpitch "90"
c_minpitch "0"
c_maxyaw "135"
c_minyaw "-135"
c_maxdistance "200"
c_mindistance "30"
c_orthowidth "100"
c_orthoheight "100"
joy_name "joystick"
joy_forwardthreshold "0.15"
joy_sidethreshold "0.15"
joy_pitchthreshold "0.15"
joy_yawthreshold "0.15"
joy_forwardsensitivity "-1"
joy_sidesensitivity "-1"
joy_pitchsensitivity "1"
joy_yawsensitivity "-1"
joy_wingmanwarrier_centerhack "0"
joy_wingmanwarrier_turnhack "0"
joy_diagonalpov "0"
cl_upspeed "320"
cl_forwardspeed "400"
cl_backspeed "400"
lookspring "0"
lookstrafe "0"
joystick "0"
m_pitch "0.022"
m_filter "0"
sensitivity "4.840000"
m_side "0.8"
m_yaw "0.022"
m_forward "1"
m_customaccel "0"
m_customaccel_scale "0.04"
m_customaccel_max "0"
m_customaccel_exponent "1"
m_mouseaccel1 "0"
m_mouseaccel2 "0"
m_mousespeed "1"
cl_idealpitchscale "0.8"
net_graph "0"
net_scale "5"
net_graphpos "1"
net_graphsolid "1"
voice_modenable "0"
hud_fastswitch "0"
g_test_new_antlion_jump "1"
scene_showfaceto "0"
ai_report_task_timings_on_limit "0"
ai_think_limit_label "0"
npc_height_adjust "1"
scene_showlook "0"
scene_showmoveto "0"
func_break_max_pieces "15"
suitvolume "0.25"
sv_noclipaccelerate "5"
sv_noclipspeed "5"
sv_specaccelerate "5"
sv_specspeed "3"
sv_specnoclip "1"
sv_skyname "sky_day01_06"
sv_backspeed "0.6"
voice_forcemicrecord "1"
voice_enable "1"
voice_scale "1"
snd_duckerthreshold "0.15"
snd_duckerreleasetime "2.5"
snd_duckerattacktime "0.5"
snd_ducktovolume "0.55"
adsp_debug "0"
dsp_dist_max "1440.0"
dsp_dist_min "0.0"
snd_mixahead "0.1"
snd_musicvolume "0.000000"
volume "1.0"
snd_pitchquality "1"
sv_forcepreload "0"
sv_voiceenable "1"
sv_logbans "0"
sv_log_onefile "0"
sv_logecho "1"
sv_logfile "1"
sv_logsdir "logs"
dsp_enhance_stereo "0"
dsp_volume "1.0"
dsp_slow_cpu "0"
cl_allowupload "0"
mp_decals "0"
r_drawmodelstatsoverlaymax "1.5"
r_drawmodelstatsoverlaymin "0.1"
r_eyesize "0"
r_eyeshift_z "0"
r_eyeshift_y "0"
r_eyeshift_x "0"
r_eyemove "1"
r_eyegloss "1"
skill "1"
r_aspectratio "0"
con_enable "1"
sv_allowdownload "0"
cl_allowdownload "0"
cl_forcepreload "0"
cl_soundfile "sound/player/jingle.wav"
cl_logofile "materials/vgui/logos/Spray_dog.vtf"
cl_timeout "30"
cl_showpluginmessages "1"
password "efilflah"
cl_showfps "1"
cl_cmdrate "40"
name "Mammoth[GunZ]"
cl_cmdbackup "2"
cl_updaterate "40"
cl_smooth "0"
fog_enable "0"
mat_bumpmap "0"
mat_mipmaptextures "1"
r_lod "-1"
r_propsmaxdist "0"
r_rainsimulate "0"
sv_unlockedchapters "1"
bgmvolume "1"
vprof_unaccounted_limit "0.3"
vprof_verbose "1"
vprof_graphheight "256"
vprof_graphwidth "512"
texture_budget_background_alpha "128"
texture_budget_panel_bottom_of_history_fraction ".25"
texture_budget_panel_height "284"
texture_budget_panel_width "512"
texture_budget_panel_y "450"
texture_budget_panel_x "0"
budget_panel_height "384"
budget_panel_width "512"
budget_panel_y "50"
budget_panel_x "0"
budget_background_alpha "128"
budget_bargraph_range_ms "16.6666666667"
budget_panel_bottom_of_history_fraction ".25"
budget_history_range_ms "66.666666667"
budget_history_numsamplesvisible "100"
budget_show_history "1"
budget_show_averages "0"
budget_show_peaks "1"
budget_averages_window "30"
budget_peaks_window "30"
budget_bargraph_background_alpha "128"