Lagg problems

[helio]

Is there any problem with my server.cfg that could cause this much fps drops

Code:

// server cvars
mp_friendlyfire 1
mp_footsteps 1
mp_autoteambalance 0
mp_autokick 0
mp_tkpunish 1
mp_forcecamera 0
sv_alltalk 0
sv_pausable 0
sv_cheats 0
sv_consistency 1
sv_allowupload 1
sv_allowdownload 1
sv_maxspeed 320
mp_limitteams 0
mp_hostagepenalty 5
sv_voiceenable 1
mp_allowspectators 1
mp_timelimit 9999
mp_chattime 10
sv_timeout 65
sv_voicecodec vaudio_speex
mp_flashlight 1  
mp_buytime 100

// round specific cvars
mp_freezetime 0
mp_roundtime 5
mp_startmoney 16000
mp_c4timer 45
mp_fraglimit 0
mp_maxrounds 0
mp_winlimit 0
mp_playerid 0
mp_spawnprotectiontime 3

// bandwidth rates/settings
decalfrequency 10
sv_minrate 0
sv_maxrate 30000
sv_mincmdrate 66
sv_maxcmdrate 100
sv_minupdaterate 66
sv_maxupdaterate 100

// server logging
log off
sv_logbans 0
sv_logecho 1
sv_logfile 1
sv_log_onefile 0

// operation
sv_lan 0
sv_region 0

// execute ban files
exec banned_user.cfg
exec banned_ip.cfg

// Zblock Cmds
zb_active 1
zb_authhost "http://www.builtonenergy.com/zblock.php"
zb_allowcashcalling 1

[pengy]

HOLY CRAP! What kernel are you using? ( If its for linux) If its for windows, what cpu do you have.