The Speed Hack Detection has been made by TWI, its not PB or VAC based, I too have had quite a few issues which I seem to have resolved now but I think they have already tweaked it and since then I've not seen any further mention of further toning it down.
There has been quite a bit of chatter about pings getting abnormally high though, if this is a game rather than server side issue I imagine it will be fixed soon and could help with this problem too.