Secxces,
I don`t think you understand what "looping" is.

It`s when the time to calculate the bars in the code takes
longer than 1000ms.

Your processor determines how fast this is done.

The fix in the mt3 code is pretty simple:

change Beginbars to 1000 (or less if you have a slow puter).

Inputs: BeginBars(1000)