We have a 10M fiber connection via EarthLink and we have Trend Micro Worry Free virus protection installed in all computers in our LAN. When using speedtest.net or speakeasy.net the download speed is 10 but the upload is only about 3. If Trend Micro is disabled, then both download and upload can reach to 10. Why does the Trend Micro come in to play to drag down uploading speed so much?
However, at the same time, if we use speedtest.earthlinkbusiness.com for testing speed, we will get 10 /10 even with Trend Micro loaded. Why does this speed testing tool can get away from Trend Micro?