I was trying to copy pipe fittings from linked document, and the time it took is ridiculously slow. Tested by copying with 5 elements took around 3-4 minutes, 2000 elements took me around 6 hours! I was trying to copy thousands of those elements and it took days. Is this a limitation by Revit itself? Could this process be sped up?
I was using the Springs.Doc.CopyFromLinkInstance node.
EDIT: Is this because Revit needs to check the system type it will be connected to? Can this be bypassed or manually specified it before copying takes place?