You have installed so many stand-alone games, if there is no conflict between the games, it will not affect, but it will affect the speed of the computer, even if it is not turned on. Even if your computer is full of movies or compressed files, it will affect the speed of the computer, because the computer has been scanning the disk. The more data, the longer it takes.

Does it make sense to increase the memory voltage? This will only increase memory. Temperature is one of the killers of computers. The higher the temperature, the slower the computer will be.

Can the virtual memory be deleted after the computer is turned on? How come? You must have turned it to the minimum.

I've only seen virtual memory expand, not shrink. Only when the system runs out of physical memory space will the system use the space of virtual memory to pre-read data. When there is not enough memory, there is no virtual memory space to provide pre-read data for the system, and the computer will obviously slow down, which is also one of the reasons for the instability of the computer. You'd better look at the hard disk space of that partition and try to set a virtual space of about 2G to see if the system is stable.

There is also the use of advanced SystemCare software to organize computer hard disks.