Server use only 25% CPU

[Patriot123 1]

Hi all! Please, help me!

Computer:

i7 3770k, 16Gb Ram, HT disabled. 100MB internet speed.

comand string for run server:

start /wait /REALTIME arma2oaserver.exe -mod=@MyMods -profiles=server -name=server -config=server\server.cfg -port=2302 -cpucount=4 -exThreads=7 -cfg=server\basic.cfg -maxmem=2047 -noCB

basic.cfg:

adapter=-1;

3D_Performance=-4194304;

Resolution_Bpp=32;

Resolution_W=0;

Resolution_H=0;

Windowed=0;

MaxMsgSend=128;

MaxSizeGuaranteed=512;

MaxSizeNonguaranteed=256;

MinBandwidth=131072;

MaxBandwidth=2147483647;

MinErrorToSend=0.001;

MinErrorToSendNear=0.0099999998;

MaxCustomFileSize=1600000;

server.cfg:

hostname = "Server Name";

password = "";

passwordAdmin = "123";

reportingIP = "arma2oapc.master.gamespy.com";

logFile = "server_console.log";

motd[] = {"3", "2", "1"};

motdInterval = 5;

checkfiles[] = {};

maxPlayers = 64;

kickDuplicate = 1;

verifySignatures = 1;

equalModRequired = 0;

voteMissionPlayers = 1;

voteThreshold = 1.1;

disableVoN = 1;

vonCodecQuality = 5;

persistent = 1;

onUserConnected = "";

onUserDisconnected = "";

doubleIdDetected = "";

regularCheck = "{}";

BattlEye = 1;

When playing more 25 players - all player have desynchronization with server and many lags. Server CPU load in only 25%! Channel load in 5Mbits.

How I can setup server with right settings? What should I do? Help me please!