My speeds are slower than transmission speeds, the below speed is what I am getting with them plugged in.

When it was plugged into the router they were about anywhere from 700mbps to 900 mbps.

I've looked on the utility tool and can see that the transmission speed is about 800mbps both ways.

I don't know if it's something I have done. I understand there will be some loss of speed but a quarter is not what I was expecting. They are both plugged directly into the socket,  I can't test them plugged into sockets next to each other due to my setup. I've swapped ethernet cables just in case this was the issue, both using CAT7. Any advce is welcome.