Is it possible to increase amibroker bar replay speed beyond 5?

amibroker has a cool bar replay feature that can come in very handy for practice trading. But the max speed allowed is 5. is there any unofficial hack/tweak that can be made to the registry to jack it up? am asking this cause i have already tweaked the maximum no. of candles per database bumping it up to 1 million(ami allows only upto 500,000) by means of editing registry.
has anyone done this kind of thing?
if not possible via registry edit, any way to implement this by means of coding etc?
have heard that ninjatrader supports 500x. Though am not sure what that means cause i've never used it.

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