I am in Japan too, but Tokyo server is not a good option as an Asian gateway in general, mostly because very slow connections to China. If they get a server in Japan, they need to get a server for China too.



Getting 98-100 ping in current Singapore server, but feels sluggish and most of time I have spikes in connection speeds.



123-125 ping California server is better, but the game goes to predictive mode, which is not good in my opinion.



A strong Hong Kong server on the other hand is probably a better option.

They have fast connections to mainland China, also I am getting 45-65 pings to several providers (one of them is Softlayer), which will be good enough to play in lockstep mode.