I got the highest speed internet with fios named 940/880 Mbps. I have very slow internet that I can not even stream a video on youtube without stopping many times. I didn't have this issue with my xfinity 50/50 Mbps.
When I check internet speed test it shows real 5/3 Mbps which I think it is the real one I am getting. When I had the xfinity I could get 45/40 Mbps which was close to the real value.
I contacted the verizon customer service they told me it is the device that can't get this value. the verizon test shows the correct value.
How is it possible that the same computer doesn't have issue in streaming videos when I connect to xfinity but I have issue with fios? How is it possible that all other internet tests are not showing correct speed ?