My house is wired for 10 gigabit Ethernet and I have a 1000 megabit symmetric ISP, but I find that I really just can't take advantage of this except when runnin

My house is wired for 10 gigabit Ethernet and I have a 1000 megabit symmetric ISP, but I find that I really just can't take advantage of this except when running Speedtest.net. Almost nobody I download from can saturate my downlink.