multithread the export process?

[fishclaws]

How difficult would that be to implement?

[kamilburda]

This is definitely doable, but it requires substantial modifications to the code to make this possible. In other words, it's not trivial to implement this at the moment.

GIMP itself already utilizes multithreading for some procedures, though. I think I'll perform some simple tests to see if processing and exporting multiple layers at once results in a significant performance gain. If so, I'll see what I can do to support multithreading in the plug-in.