R8000 internet upload speed fail

Router has been working ok with a 40/5Mbps Internet connnection. I just upgraded to 100/50Mbps and router will not exceed the previous speeds even after disabling QoS. After no further luck, I just factory reset the router, now I able to get 95Mbps download, but upload is still stuck at 5Mbps.

I can connect my laptop directly to the internet and run speedtest.net to same server and i get 99Mbps download and 51Mbps upload.

What is the issue with this router? Where can I set the upload speed to be higher. I manually set QoS speed to 100 / 50 Mbps, no help either.

Any help would be appreciated. Otherwise some lucky person can get this R8000 for half price.