My gmod dedicated server crash

[dkssud]

BASIC INFO
Server OS: Windows7 64bit ultimatek
Processor: q9400 @ 2.66
Ram: 4gb
Game(s): garrysmod
Start Up Command: start /high /wait srcds.exe -console -game garrysmod -port 27015 -maxplayers 10 +map gm_flatgrass -autoupdate -tickrate 33
Admin Mods: moocow,ulx
Network bandwidth: up/download 10mb/s (yes this is so fast)

first of all, i run srcds and play game on a same computer.
this is only way for me.(listen server=suck rent a server=dont want)

My server ping is too high when above 8 players. and very much crash (per 3~4hours) oh my server just crashed damn it.

So, i want to optimize to maximum for fix them.
this is my server network config check whats bad:
sv_minrate 15000

sv_maxupdaterate 33


sv_minupdaterate 15

sv_maxcmdrate 33

sv_mincmdrate 15

host_framerate 60

fps_max 300

net_maxfilesize 64
sv_lan 0
sv_allowupload "1"
sv_allowdownload "1"

ive checked valve dev wiki, gmod wiki admin page, srcds search, googling, and changed so much times. but i cant find the correct answer. what's best config for me


and is there other way to optimize my server? i'm checking unuse programs, config, start line, or remove bad addons.

i guess gmod srcds is resouce monster.

Thanks and sorry for bad reading

[dualcore1289]

GMOD is a resource HOG. All the physics and what not happening. There are ways to help with it though, google "srcds optimization" there are tons of things that come up.