I am trying to build a computer which should be able to run games like Minecraft, Fortnite and CSGO. I have an old computer, but it gets pretty choppy running Fortnite. I was hoping that I could just switch out the graphics card with something like a Radeon RX 6600 and that would be enough.
Specs of the old computer
CPU - Intel Core i5-3570K 3.4 GHz Quad-Core Processor
A good place to start would be to use your computer's resource monitor to see where it is bottlenecking while you play. If you can connect a second monitor or tv to your computer you can have it on that screen while you play and see what is tanking.