i dont really get why streamyx is providing such bad latency. If by using tunnelling services, our ping is around 300. Does this mean that streamyx is actually capable of providing a much lower latency?

Besides that, there is almost 60ms latency lost when compared to singaporean ip.
eg. KL to NYC 310 using streamyx
SG to NYC 250 using singtel (i could get consistently green latency w/o any tunnelling etc etc)

ANyone knows what is the cause of this problem?

Maybe its your splitter. The same thing happened to me when i was using dial up. Keep dcing continually, however after changing the small box, everything became fine, im not sure if that applies to streamyx too. That box was quite rusty.