Make sure internet provider is not bottle necking you, it happen to me... I had to call them to fix the issue. Also when you reset the router, disconnect ethernet wire and plug it to another port on the router...move it from port 1 to 2.
It would great if the R3 supports 2GIG's I have been looking to upgrade my internet speed from 1gig to 2gig, please have this on the next one, happy holidays, you guys make a great product