Did this end up being a consistent solution for you? I think it worked for maybe a day for me and then speed went back to weird. I've had some luck cycling listening ports, but always a temporary fix. I don't think I'm being throttled on the ISP end, since all other types of connections seem to be fast. The fact that under a fortuitous combination of things I'm able to reach speeds of 25Mbps+ seems to indicate that something is weird on the RS side. This has been going on for years now, but still holding on for some kind of actual solution...
