Sometimes I'm using a Google service in a few browser tabs, and the Google pages all of a sudden start to load incredibly slow (dozens of seconds to start displaying the pages, such as Google results). A few minutes later, problem's gone (that happens at average, say, once a week or two). If I do a
ping google.com during it, the response takes less than 20 or 50 ms (depending on time of day/amount of users in my area).
ping fast, but sites are slow, during these strange moments? Shouldn't
ping get slow as well, if that's a traffic problem?
If it's not a traffic problem, what else can it be?
PS: Asked first on Network Engineering, but probably off-topic there, I've been told.