Hey guys first post here sorry if it's in the wrong location. So today we just upgraded our service from 100 to 400Mbps. While we did notice 350Mbps (as per speed test on smart phone) My PC is being throttled at 100Mbps. Have tried multiple fixes online, including changing out the cable. (using a Cat5e) as well as messing with the Duplex. No joy. Any suggestionts? Will provide particular hardware on request.