This site is very slow on updating difficulty therefore very inaccurate. Make sure you guys are checking difficulty on all the coins at the actual mining pool site before you jump on. It's often much higher than what coinchoose reports therefore making the coin less profitable.
Umm, the delay is minutes (actually 60 seconds) and it is directly checking against the coin daemon. Look at the block count - that will give you an indicator how far behind it is (if any). Pool sites actually lag more

It's longer than 60 seconds. I frequently see some of the top coins delay hours. On both the litecoin and the bitcoin version. This has been for the past few months, since summer.
In fact there is one up there right now. Memecoin says .17 when it's actually .69. It has been like this for at least 12 hours.