PLT, I had three people in front of me when I went in at 3.30. I have to say that I have never waited more than a couple of minutes and because of that, I cannot find fault.
There was a delay as the woman in front could not scan her ticket and even when it went on to green she did not move. At all of the turnstyles there was a steward waiting to help. But if this lady was anything to go by, the problem is made worse by her choice of clothing, having a handbag that must have had enough blankets and flasks for the whole stand, the biggest faux fur hat and coat (at least 2000 bin bags must have died in order for her to look like a Russian) and mittens!
All of that aside, there is a problem and it happens at a lot of grounds. Upton Park was the worse for me.