Anti-virus software are programs that run on your computer. At any one time there are lots of programs running on your computer. The more that are running, the slower the computer can work. So when you install a new program like anti-virus software, it is an extra program to run which will make your computer slower. It is still important that you do use anti-virus software, even if it does slow down your computer.
i don't use it because it will make my computer slower
If your computer is slower than usual or behaving oddly, you may have a virus. Install a virus scanner and scan your computer.
By using Antivirus
The short answer is yes it probably is running a bit slower while the anti virus program is running but not as slow as a system infected with a virus. If you are worried about performance schedule the anti virus program to run at a time when the system is not in use ie. overnight and let it run.
antivirus
Mcafee
Yes, but I'd feel safer using it with antivirus.
Antivirus software can be defined as a program that works to detect and remove harmful viruses from a computer. Antivirus software combats computer crime by shielding one's personal information and essentially their identity, online.
Get yourself a good antivirus.
you use antivirus and scan the computer then remove the virus
No If the computer runs faster then it runs faster not slower
Antivirus software will notice about the virus,malware,spyware etc