For being from the same provider, those graphs sure look a *lot* different. One interesting component here is that the results from PingPlotter have similarities to the way the site behaves for you - timeouts, big lags, etc.

In any problem scenario, your goal is to do two things: 1) Identify the problem so you can 2) Fix the problem.

Often, some help from your ISP is required on both of these steps. There is still some distance to go with identifying the problem, but this might be interesting enough to RoadRunner support to start helping you with this issue.

Since they recommended that you download PingPlotter, I would send the results to them and see what they have to say (or point them at this thread).

The fact that you're no longer receiving data for intermediate hops makes this a bit more difficult to convey a strong story to them.

Are there other sites that *do* work quickly? If you run PingPlotter against those sites, do you get different results in PingPlotter?