[RT-AC3200] A question for AC3200 owner before i make the purchase for this router.

I saw there are quite some comments in Amazon saying that the Smart Connect isn't working properly for AC3200. But the firmware they used were the older versions. I saw the latest firmware now is 3.0.0.4.378.9135.

Can any AC3200 owners provide a update that if the latest firmware has resolved the instability of Smart Connect function in this router? Thanks!