Thanks for the feedback. With all I've been through, I'm nervous to make any other changes that may compromise the full speed I'm getting. Maybe I'll try 17.0.6 to eliminate needing to disable / re-enable and keep my fingers crossed that speeds don't get affected and I get the best of both worlds. Hopefully if it doesn't work out I can go back to the drivers I have now, that allow for full speed.
Comcast came out with a new wireless Gateway that's dual band which is an Arris DPC3939. So I'm on 5.2 ghz. I should probably test 2.4 ghz to see if that is giving full speed as well. I'll do that after I get home from work.