isp 1000mbps EA6900 290mbps ?????

Hello everyone, I speak Spanish and I am using a translator, I hope you understand what I write

I have a problem with the Internet connection of my Linksys EA6900 router when I connect it, it does not give me full bandwidth

1000 Mbps Isp connection
I connect it to my pc
speedtest.net
1000 mbps result

1000 Mbps Isp connection
Linksys EA6900 (with tomato)
speedtest.net
result 290 mbps