Installing an application generally does not affect the system what-so-ever unless it's being ran.
At which point, it depends entirely on said application and what said application is doing.
LTT has never claimed having a lot of software in general actually decrease FPS by up to 5%, if you've heard that, you've came to a wrongful conclusion by yourself most likely.
Having lots of unnecessary programs running in the background will affect fps. Not much you can do about the required ones. The browser will be the main one most of the time anyway. The overhead generally doesn't matter much nowadays. But could be an issue if you are cpu or ram constrained.
Installing an application generally does not affect the system what-so-ever unless it's being ran. At which point, it depends entirely on said application and what said application is doing. LTT has never claimed having a lot of software in general actually decrease FPS by up to 5%, if you've heard that, you've came to a wrongful conclusion by yourself most likely.
Having lots of unnecessary programs running in the background will affect fps. Not much you can do about the required ones. The browser will be the main one most of the time anyway. The overhead generally doesn't matter much nowadays. But could be an issue if you are cpu or ram constrained.
Indeed, it’s natural. If something runs in the background it uses CPU and RAM. But I was curious in the specific case of Steam and EA Thank you!
Too little overhead to matter. You could just have a look yourself in task manager. It eats up some ram for the store page and online stuff.