I'll assume you've taken care of everything on the network end, killed everything that competes for network time. Don't forget your antivirus, those shields block everything, including your game.
Are we talking about a desktop or a laptop. Desktops are easier to upgrade, that's what most gamers do - you don't pour thousands of dollars (in your currency) into your system only to scrap it two years down the line, leave that to the smartphone business.
What do you have to work with? I'm not talking about cash, you've obviously got the money if you're dropping names like 'gaming pc'.
Ok so my computer has like 1000 ping if I'm playing a game. I need to upgrade, but I don't know what to get. Please recommend a gaming pc or gaming laptop in the comments.