How to significantly speed up computer or laptop performance (For games)

The advice which I give here comes with a warning.

Increase in performance can reduce computer's duration time. Instead of lasting for 10 years, it might last much less.

So here are the best ways to improve performance:

Simply setting greatest possible size for paging file on all drives allows you to play games which normally exceed requirements of your PC and lag.

Paging file can be set to be 100 gb on each drive. So if you have two hard drives, it will be 200 gb. This acts as RAM memory, but it is based on speed of your hard drive. So its like having 200 gb RAM with speed of your hard drive.

I usually set paging file to be minimum 100 gb on each drive. Basically, greater the paging drive on each drive, better is the game performance.

Another great way to improve PC speed is to set power plan to high performance. 

Computers and laptops usually give you options to save power or use more power for performance.

Lower resolution always performs faster.

Do this at your own risk. Antivirus slows PC, but protects it from viruses. You can disable it while playing a game, then enable it after you are done playing.

All unnecessary apps, programs, notifications, icons have a small effect on slowing PC.

This is usually found in advanced system settings. It makes text look ugly, but improves performance.

An obvious one, but graphics usually have a choice to choose quality, performance or power saving.

Windows has game mode which improves performance.

I am not sure how much this helps, but it does seem like unnecessary function, so I disabled it.

Obviously, computer is faster if it only runs the program which you need it to at the moment.

This is necessary because more space you have free on each hard drive, more space you can use for paging file.

Power saving mode usually slows down PC.