Fastest way to merge multiple arrays?

[Vaxx]

My game will have around 20 arrays once completed and for a savegame system I was looking for the fastest way to merge all those arrays into one big one.

Currently I only use Z 0 on each array so I can probably take the largest X and Y size I have in any of the others and create a new Z 20 or maybe Z 30 size.

Is there any faster way then fastlooping through X and Y and copy the data over from every single file?

Any ideas appreciated,

Thanks!

[Jeff]

I can't think of a faster way then a fast loop.

How long is it taking?

[Vaxx]

I have not tried yet, Jeff. I was looking for alternate solutions so I don't have to deal with this mess.