tp-link archer c5v

Hi, I recently upgraded to 100mbit fiber. Fiber comes with a default Router given by my ISP(Turk Telekom) Tp-Link 1200 AC Archer C5v. Both my PC and my Smart TV(samsung 55q60rat 55") are connected via ethernet cables. When I run the speed test from my PC, I get around 110-120 mbps. But my...