Please tell me how to fix the lag when you play PC games

pu1. If you look at computer specifications, you can look at graphics cards, memory, and cpu in order

2017-12-14

OK

pu2. There's a big difference depending on whether it's ssd or hdd

2017-12-14

OK

pu3. If it's a game that uses the Internet, it depends a lot on the performance of the Internet. Of course, it's slow when you play games while downloading something

2017-12-14

OK