Comcast is my cable/internet provider. I recently upgraded my up/down speeds. I if let speedtest choose it's own server based on ping (which is around 35~40) my speeds are not that great. If I manually choose a Comcast server (ping is 5~10) my speeds are where they should be based on the package I paid for.
Is this due to their "Powerboost" feature? Is there another way to check that will give me a more accurate picture on my speeds?