Blender's performance improvement spree this week extends beyond the realm of mesh editing, with LineArt author YimingWu constantly working on updating the performance of the NPR modifier, which has already gone a long way since its release in Blender 2.93.
— YimingWu is it way too loud (@ChengduLittleA) June 9, 2021
His latest commit makes LineArt mesh loading multithreaded, increasing loading speeds anywhere between 20 to 50%! This translates into a total performance increase of around 5%, which when stacked on top of all the other LineArt performance improvements makes a significant difference over its initial release in Blender 2.93.
Get the latest Blender experimental build to test out all these performance increases: