Recently I upgraded my internet to 1gb speeds and I cannot figure out why this router cannot handle these speeds. If I directly connect my pc to the cable modem, things are fine, getting over 1gb spee

I have a TP-Link C5400X router with the latest firmware. All of my PCs are hardwired. LAN transfer speeds are fast, as tested by iPerf (~115-120 MB/s, 950 Mb/s). I have gigabit internet, but my intern