No QoS controls to be found? AND slow wired speed relative to modem

Think I found the answer to the degraded speed. The modem LAN light is green when a 1Gb connection is made, as when I am wired directly to the modem. When I wire the router to the modem, the LAN light is amber indicating 10/100 or 100mbps connection. Someone else with the same situation [but different, parallel equip] was told he needed to get a gigabit router so the modem LAN is green, not amber, indicating a 10/100/1000 port. He did that and it fixed his problem. Am returning the R6080 for an AC1200 R6230. Hope that will do the trick. AND the 6230 also has QoS controls.