[Sephiroth]

Just to help you interpret the TBB graph: I rely on the graph for when my system is quiet or lightly used. When you're using your line, its traffic has priority over the pings coming out of and responding to TBB. So you'll see spikes, which might thus have been caused by your satisfactory activity but which delay the low priority TBB traffic.

If your circuit is quiet but you see high latency, then chances are your network segment is more heavily utilised. Solid blocks of high yellow in those circumstances might adversely affect your experience.

Hope that helps.