The problem is that it seems to drop connections occasionally.
Also, when our N PCs come out of sleep, they have a great deal of problems connecting to the router. Our one AC PC doesn't have this problem and the N PCs didn't have this problem with the DIR-825 the DIR-822 replaced.
There's really nothing on the CDN support page about this particular router. I wouldn't have bought it if I knew it was not also a USA model.