Have you tried profiling your game?
I can't see any info in the GLB help about profiling, can you enlighten me as to how this is implemented and what exactly it does. Thanks in advance 
"Doh!", just noticed this, sorry for the slow reply.
You probably know this well by now Spicy but just in case...
Under the "Compiler" menu, click "Profiler" then "Active".
Run your code then exit.
Got back to "Profiler" then click on "Output".
The GLB editor will then open a tab with the profile.
I seem to easily loose track of threads in the forum.

BTW: The purpose of the profiler is to show how fast or slow your code is, split into a per subroutine list. It's an optimisation tool.