1, Tencent computer housekeeper and 360 security guards installed at the same time will slow down the computer network speed. This is because anti-virus software will detect all computer traffic in order to protect computer security, and the network speed will naturally slow down after two anti-virus softwares detect it twice.

In order to avoid this situation, you can't use two antivirus software at the same time. For example, Tencent Computer Manager, Kaspersky, Norton and NOD32, which are free in China, all have perfect network protection functions. If you use them alone, you can protect the security of your computer, and you don't need to use a combination of multiple antivirus software.

3, 360 security guards are used to prevent Trojans and optimize the system, and need to be used in conjunction with 360 antivirus. Tencent Computer Manager is an anti-virus software that integrates management and anti-virus. Comparatively speaking, it takes up less memory.