Thank everyone for their thoughts and comments. Everyone has been really helpful and I am extremely grateful for it.
In researching more and more into this, I am finding that it doesn't matter about make or model of the router. There are a whole lot of people having this same problem across the board. You can find post just like this on all makes of router forums and also all across Xbox forums.
The troubling thing seems to be that if a reduced NAT setting and opening up the ports doesn't solve the problem, then it may be that there is no solution.
I have reset my router settings back to where they started for the most part.
I have only kept the Gaming rule (Opening ports 88,3074 UDP and 3074 TCP) and the reduced NAT setting.
Things are running just as good with these settings as they did with all the other stuff added in.
Thank you Lycan for your knowledge and input. This has been a crash course in routers and it is through the help of people like you that those of us who don't know these things can learn.
Now enough of this stuff. Let's go gaming!!
