I did have problems a couple of weeks ago where I was getting hundreds of seconds for a ping and really slow upload and download speeds - but that seems to have gone away.I put that down to a synology box doing a sync to another one in Gt Yarmouth as it all got better when I stopped the sync.
Re: Had an upgrade to 200meg...now slower than ever
Yes, I found my issue by disconnecting everything and just plugging a PC directly into the back of the modem. I didn't turn it into "modem mode" but made sure I only had one device plugged in. Then it all went super fast and I was able, by a process of elimination, to track down the issue.