Ac3200 X6 R8000 Slow Upload Speed

I have a X6 Ac3200 R8000 and for some reason it has or is capped to 6mb upload.

So OK I have done this so far.

-Reset router to factory settings using the reset button

-Adjust and tweak MTU

-Set QOS to 100mb/100mb and also tried it disabled

-Mess around with rip settings, lan, etc

Result is it does nothing.

So what speed test am I getting?

I am on a 75/75mb fiber dsl on frontier. The router is piggy back to the frontier router, so what I did is make the netgear set DNS for lan and wifi. On the router OoS page it has a speed test and it about:

85/83 on netgear router

85/5 on the pc that is wired to netgear.

85/84 on pc if I wire it directly to the frontier router(which is so upsetting because it is a cheap router vs the R8000)

And I also did the same test for wireless. But I need the R8000 because for the optimized multimedia and gaming plus the wifi range. So not sure that else to do cos I even downgraded the firmware just for the hell of it to see if it makes a difference. And that is a no. So what I finally did is disable dns on R8000 and set it up a AP mode. There was a improvement it now goes to 85/26 still low if the router internal speed test goes to 85/83. Does anyone have any idea how to fix this?