This is the sysinfo of my router.Look on the Tools / Sysinfo page at the Network section near the bottom. Post a screenshot of that section, showing the Hardware Acceleration status and Ethernet ports.
I've read other posts on this forum and I turned off and changed things that others suggest and the router's performance is still weak.
I did speedtest within my local network with iPerf and for example the local network speed between my Macbook and iPhone is 224 Mbit/s and upload 243 Mbit/s. - No wonder why the internet connection doesn't hit 1 Gbps.