Hello I've checked multiple times with my ISP, Optimum, who have confirmed they are providing between 900-1.3gb down on multiple occasions
I connect to an Archer AX21 (DOCSIS 3.1) with a cat5e and it gets 300mb down.
Ive tried connecting to the modem (SB8200) with a DIFFERENT cat5e and get 400mb down. I use the first cat5e and still get 400mb down.
I'm getting 40-50% of my ISP provided speed through the modem when directly connected . I also ran through support with Archer and they don't have any obvious solutions from their end since all the speed drop occurs before their product