Had my ps4 for two weeks now. I notice when playing games it intermittently makes a high pitched humming noise for a couple of seconds. Is this normal?
Not sure quite what type of noise you mean, as to me a 'humming noise' can't really be that high pitched by definition

But I do sometimes get a somewhat higher pitched hum for a few seconds as if something is working hard and then it goes back to normal. I think its usually when games are loading up though...can't remember.