To me, the whole ordeal screams: software bloat, software misconfiguration, background service overload. You could snappily send mail 15 years ago, and the computational task itself hasn't grown much, besides bloated browser login windows.
Try booting a 2 GB RAM machine to some RAM-preloading Linux thumbdrive and you'll see why the problem is not "spinning rust HDDs" and "only 4 GB RAM"