Chute itempestive de mes fps (cs 1.6) !

Bonsoir,

Je poste en dernier recours,

Il de cela quelques semaines, je ne connaissais pas l existences des problèmes potentiels liés aux fps, seulement, un jour, après avoir installé des pilotes de ma Carte Graphiques,
j'ai vu que j'avais trop de lag ==> recherche web ==> net graph ==> 30 fps !

après avoir lu pas mal de forum parlant de fps, j'ai réussi à réparer ce soucis et obtenir allègrement mes 100 fps, par contre, le soucis, c'est qu'ils ne restent a 100 que pendant 10 min, et apres retombent de facon catastrophique, parfois jusqu'à 20 !! (injouable)

Si quelqu'un a des idées ...

cfg : processeur dual core intel 2x2.2 ghz (e4500)
C.graphique : geforce 8600 gt
RAM : 2Go.
Écran : 19" plat. (samsung)

Sync verticale désactivée, le reste contrôlé par app / réglé sur Haute performances.

extrait de ma Config.cfg :
_cl_autowepswitch "1"
_snd_mixahead "0.1"
ati_npatch "1.0"
ati_subdiv "2.0"
bgmvolume "1.000000"
bottomcolor "6"
brightness "2"
cl_allowdownload "1"
cl_allowupload "1"
cl_backspeed "400"
cl_cmdbackup "2"
cl_cmdrate "101"
cl_corpsestay "500.000000"
cl_crosshair_color "50 250 50"
cl_crosshair_size "small"
cl_crosshair_translucent "1"
cl_dlmax "128"
cl_download_ingame "1"
cl_dynamiccrosshair "1"
cl_forwardspeed "400"
cl_himodels "0"
cl_idealpitchscale "0.8"
cl_lc "1"
cl_logocolor "#Valve_Orange"
cl_logofile "lambda"
cl_lw "1"
cl_minmodels "0"
cl_radartype "1"
cl_righthand "1"
cl_shadows "1"
cl_timeout "300"
cl_updaterate "101"
cl_vsmoothing "0.05"
cl_weather "0"
con_color "255 180 30"
console "1.000000"
crosshair "1.000000"
fastsprites "0"
fps_max "101"
fps_modem "0.0"
gamma "2.640000"
gl_dither "1"
gl_flipmatrix "0"
gl_fog "1"
gl_monolights "0"
gl_overbright "0"
gl_polyoffset "0.1"
hisound "1"
hpk_maxsize "4"
hud_capturemouse "1"
hud_centerid "0"
hud_draw "1"
hud_fastswitch "0"
hud_saytext_internal "1"
hud_takesshots "0"
joystick "0"
lookspring "0.000000"
lookstrafe "0.000000"
m_filter "0"
m_forward "1"
m_pitch "0.022"
m_side "0.8"
m_yaw "0.022"
model "gordon"
MP3FadeTime "2.0"
MP3Volume "0.800000"
mp_decals "300.000000"
net_graph "3"
net_graphpos "3"
net_scale "5"
r_bmodelhighfrac "5.0"
r_detailtextures "0"
s_a3d "0.0"
s_automax_distance "30.0"
s_automin_distance "2.0"
s_bloat "2.0"
s_distance "60"
s_doppler "0.0"
s_eax "0.0"
s_leafnum "0"
s_max_distance "1000.0"
s_min_distance "8.0"
s_numpolys "200"
s_polykeep "1000000000"
s_polysize "10000000"
s_refdelay "4"
s_refgain "0.4"
s_rolloff "1.0"
s_verbwet "0.25"
sensitivity "3.520000"
skin ""
spec_autodirector_internal "1"
spec_drawcone_internal "1"
spec_drawnames_internal "1"
spec_drawstatus_internal "1"
spec_mode_internal "4"
spec_pip "0"
suitvolume "0.250000"
sv_aim "0"
sv_voiceenable "1"
team ""
topcolor "30"
viewsize "120.000000"
voice_enable "1"
voice_forcemicrecord "1"
voice_modenable "1"
voice_scale "0.750000"
volume "0.800000"
setinfo "_vgui_menus" "0"
setinfo "_ah" "0"

Merci d'avance ;)