@Tony i am currently running a cat7 ethernet cables and the length of the cable is 15m and no bents no damage or maybe its just faulty i dont know i might try and replace the cables just to test it

i have a archer c9 hw ver 5 before i switched routers i am getting around 800mbps and when i switched routers to a tp link archer c9 i am only getting 100mbps please help me fix this thank you very...