I'm using fiber internet connection thru PPPOE connection .. download speed 500 mbps and the upload 100 mbps before I was using c7 and c2300 thru pppoe and I'm getting the full speed on both, now I sw

Hi, I received today the new router, my ISP contact is 300mbps download / 300 upload. When i run a speed test i get ~280mpbs down / up to 6mbps upload. I put back the old TL-WDR4300 and i get ~90/90 u