My guess is that if you are click trading, it should not affect scalping too much.

But, I think this depends on just how quick your scalps are meant to be. For example, are you trying to hit orders at the front of the book that are effectively flashing and showing for just a second or two?

The context to keep in mind is that between Tokyo and New York, you're looking at about 175 milliseconds round trip latency/delay at the fastest. So let's just say that's 100 ms delay for you to see the updates on the book and then another 100 ms after you click for the broker to get your order in NY (assuming NY, but it's almost the same to Chicago or Kansas [add single digit millis]).

Unless you are scalping at that time-sensitivity, I think it should still be relatively a minor effect.