But those things I mentioned happen regardless of the hardware build quality. Hardware quality will avoid hardware issues, things like overheating or stability

But those things I mentioned happen regardless of the hardware build quality. Hardware quality will avoid hardware issues, things like overheating or stability problems. The things I mentioned are software integration problems that are a natural consequence of the PC ecosystem being much more heterogeneous. It doesn't matter how good your hardware is. There's just no way around the fact that when your ecosystem gives people much more choice and flexibility, it's going to be jankier than one which doesn't. It's just math. As you add dimensions to the problem space you reduce the fraction of the problem space you can test to ensure the user experience is good, and you rely on users to figure out how to reach a good point in that space, since you can't do it for them. If your dimensions are at least separable you might have a better chance (linear scaling instead of exponential), but modern systems are too complex to keep one issue from influencing others. It's a massive engineering problem.