Improve parts with artefacts/ slowly rendering

[Johannes Ahlmann]

Hi,

I am rendering Lego parts using Blender and https://github.com/TobyLobster/ImportLDraw (using "p" "48" ldraw geometries).
Some of the very basic and simple parts take forever to render, and other parts contain artefacts.
Is there a good place to raise a list of parts that are unnecessarily complex or that display render artefacts?

Examples of parts that render extremely slowly (20x slower than complex parts), some of which are the most basic bricks and plates.

2419
2445
2454a
2456
2730
3001
3006
3007
3020
3027
3030
3031
3032
3034
3035
3036
32525
3297
3702
3738
3832
3857
3865
3867
3895
3958
4204
4510
60479
6111
6112
6179
91405
92438

Examples of bricks with artefacts:

• many domed bricks
  
• some bricks that have clearly been assembled from subparts with noticeable gaps/ discontinuities
  

Regards,
Johannes