I hear people on here talking about disabling Antivirus..What a great way to obtain a virus. While yes they may be system hogs if your on limited RAM you are asking for trouble when you disable it.
Most of the newer programs have what they call "Game Mode" it will auto config the program to use less RAM. Thats your best bet and safest.
AVG used to be a very good program but I dont think it has game mode option ....yet.
Avant is an excellent virus program to use . I highly recommend it. Windows Essentials works great and is Top Tech certified to use less system resources then any other tool out there.
Just some feedback. Is playing this game worth losing your computer all together ? I run an anti virus program as well as a malware defense program in sync and dont have any slow downs or meter skips on a regular basis.
But if you do decide to disable your virus protection to play this game be sure to enable it when your done :)
Good Luck and Happy surfin...The worms and trojans await.