I think with 4.0 release, they were more focus on getting engraving more correct (among other big changes like the new sound system), and that resulted in a per

I think with 4.0 release, they were more focus on getting engraving more correct (among other big changes like the new sound system), and that resulted in a performance hit, but the 4.1 patch notes specifically say there are significant performance improvements, so it would be worth it to try it out again.