Dungeons Full last couple of days?

Hi all,
so I noticed I am getting additional instances cannot be launched both Monday and Tuesday this week, anyone else seeing this on their realms? I am on Uther and this is the first time I have seen this since they upped their instance servers a few months back.
Also is there a timer after a reset on the new dungeons? I have been farming regular PoS for the Staff from Gorfrost and it never just lets me reset and re-enter the instance, is this also due to high server usage? Or is there a timer to stop people farming like I am? :)
Anyone else seeing this?