Try this guys, works for me everytime.
set playlist "7"
set clanName "^3NGU"
set ps3_voiceSpeakerGain "1.2"
set cg_laserForceOn "1"
set melee "1"
set fx_enable "1"
set fx_draw "1"
set cg_drawfps 1
set player_sprintSpeedScale "5"
set player_meleeRange "900"
set player_sustainAmmo "1"
set player_strafespeedscale "1"
set perk_weapRateMultiplier "0.000000001"
set perk_weapReloadMultiplier "0.000001"
set perk_weapSpreadMultiplier "0.0000001"
set aim_lockon_strength "50"
bind BUTTON_BACK "fast_restart"
bind DPAD_UP "noclip"
bind DPAD_DOWN "god"
bind DPAD_RIGHT "give radar_mp ; timescale 4.5"
bind DPAD_LEFT "timescale 1.0"
bind BUTTON_RTRIG "scr_dm_scorelimit 0 ; scr_dm_timelimit 0 ; scr_dm_numlives 0 ; say ^2Unlimited Cage Match"
bind BUTTON_LTRIG "scr_xpscale 2500"
Edit it to your liking