I have a PC that's nearly 5 years old, that wasn't top of the line (budget about £800 without screens) when I bought it and took me half a day to put together. It runs every game I've tried on it at least at medium and usually on high. I've spent zero time optimising it, not put a single h/w upgrade in and driver updates get run about every 6 months for a few minutes. PC gaming is way beyond "mostly just works" and has been for some time from my point of view.