Thanks for valuable answers. I tried diusabling nat and booster enabling QoS and different settings. I have got cat6 cable and this cable is already able to get over 900mbit from modem so issue isnt...

Dears, I have got 1000mbit internet on my home when i connect my lan cable to modem i am reciving over 900mbit but when i try it from c7 router i am receving 92-95 download and 90+ upload. Upliad is...