I'm Having a problem with this router, on my speed test result im only getting around 14.97 to 20mbps speed, I already set my 

Internet Port Negotiation Speed Setting to 1000Mbps Full Duplex, enable my Qos and set my device as priority still my speed did not improve.

Note:
- I already tried different cables like cat5e and cat6 Ethernet cable still no improvement.

- i bought this router so that i had a strong connection to my room, because it said on the box of your product is "faster speeds with wifi 6", "Reduced Latency", and "Full Gigabit Ports"

- when i directly connected to my isp modem my speed test result is 826.65mbps