CS 1.6 lag with a lot of players

Well I have a big craze of counter strike.
When I join a gun game server its ok in the beginning regardless of the no. players. After a minute or two the game becomes slower , slower and slower. But when a round is over, in case any side wins then when the next round starts it becomes normal. But again it becomes slower as the the time progresses.

Since in gungame server it is very unlikely that a round would end but sometimes it do happen so I cant play properly on it.

This problem has generated in the last two months.

My system specs are:
768 MB RAM ,2.4 GHz processor , 20 GB hard disk( 9 GB of which is empty) and a desktop system of dell , model GX 260.

Can someone help me out.......

Your RAM Looks to low, i prefer to upgrade your RAM and HDD because C.S 1.6 Takes up your RAM, try using Game Booster 3. USE crucial to see what RAM will work for your Motherboard.

Well it was working fine two months ago.
After that the problem started .
All the other servers work fine except the gun game server.

BY the way how to check how much RAM would be suitable for my mother board?

Look up your Motherboard or use http://www.crucial.com/systemscanner/index.aspx
You dont need to buy their RAM after you install it look at the specs and find it around the net.

the symptom begs of your ISP applying a QoS throttling of the server port and
thus

a) it's unlikely that system modifications would remove the regressive performance symptom, and
b) it's highly likely that you have no control over the QoS on the ISP side.

you might be able to disable the QoS on your TCP stack

• View Network Connections
• right click on the Lan Connection->Properties
• on the General Tab, scroll to find QoS Packet Scheduler
• uncheck [ ] the box in front of it
• click OK

I did that but it didn't help.