Termination "srcds.exe"

Hello, I have a server with 64 slots, and when 50-60 people then the server crashes with the inscription stop working srcds.exe
Help Please.





The server OS: Windows 8.1
Processor: Intel Core i7-4790K (4.3 GHz)
Ram: 16 gb
Game: CSGO
To Run The Command: set servername=spb crash

set cmdline=srcds.exe -game csgo -console -tickrate 64 -debug -condebug -usercon +game_type 0 +mapgroup mg_bomb +map de_dust2 +game_mode 0 -port 27015 -nocrashdialog

@echo off

title %servername% Server

cls
echo.
echo **************************************************************
echo * To close this script, close the Server window and type "Y" *
echo **************************************************************
echo.

:restart

>> "%servername%.log" echo (%date%)(%time%) %servername% Server now is OnLine

echo.
echo (%date%)(%time%) %servername% Server now is OnLine
echo.

start /wait %cmdline%

echo.
echo (%date%)(%time%) Restarting %servername% Server
echo.

>> "%servername%.log" echo (%date%)(%time%) Crash or Close detected! Restarting %servername% Server
>> "%servername%.log" echo.

goto restart
Admin Mods: SourceMod, MetaMod

Internet Speed:
http://cs623821.vk.me/v623821876/7ec3/wG7ghRbrtpw.jpg