FSC OSGR tool - very slow, or is it me?!

Hello,
I am using the OSGR tool to apply a 6 figure grid to my UK map. However it seems to stall around the 30% completion mark. I’ve tried running it a few times now - unchecking the label box just in case that slows it sown, but the problem keeps cropping up at around the same stage of processing.

Should I just let it pootle away hoping it will get there eventually? Or is there something else I can try to do to get it to work?!

Thanks!

A six figure grid is a 100m grid. If you are doing it over a large area that can be creating a grid of tens or even hundreds of thousands of squares. How big an area are you doing it over? For very big operations, the progress bar often seems to stick around 30% even though the processing carries on.