My dad didn't understand why his (admittedly quite old) laptop really struggles on some websites. For most of his usage - buying tickets, checking emails - it s

My dad didn't understand why his (admittedly quite old) laptop really struggles on some websites. For most of his usage - buying tickets, checking emails - it suffices just fine, but a badly coded flash advert can bring the entire machine to a crawl. It was very difficult to convince him that yes, it was actually the crappy slideshow advert on one tab that was making his entire computer unusable.