I think a better default would be something like (1,1,-1) so that no common view direction (Up, Right, Front, etc ...) would be affected. I tried and a lighting similar to what was the appearance in previous release could be: FreeCAD.ParamGet("User parameter:BaseApp/Preferences/View").Set...

Maybe your light source is oriented fully on the Z axis ? You can tweak it in Preferences -> Display -> Light Sources. that is the culprit @easyw-fc maybe it has something to do with the latest material appearance changes? maxwxyz @maxwxyz adjusted the default material appearance to better display ...

Thanks to all for testing and observations.
@jeno @jeno thanks for the insight, I'll test it.
@hatari @hatari , thanks for the code modification link. I'll investigate it.

This doesn't happen for me. thanks for testing... here the FC0.22 demo file with the wrong shininess demo-fc022-wrong.FCStd Maybe your light source is oriented fully on the Z axis ? You can tweak it in Preferences -> Display -> Light Sources. I'll have a look at, but the result is happening even wi...

Hi, with the recent releases of FC0.22 I noticed that the shininess of the 3d object is changed... When I load a simple model and I put the view from top, the shininess of the object is changed a lot compared to what normally was present in FC, putting the appearance colors to almost white. The colo...

you can use Part defeaturing tool
https://wiki.freecad.org/Part_Defeaturing

what about realthunder releases?
Have you tried those?
Are they also slower?

If not that means that realthunder had implemented TNP in a more valuable way...
EDIT:
In my previously tests @realthunder FC release was faster than FC main branch...

Yes, we are the same.

yes, how did you do that? :shock: I used defeaturing and defeaturing wb. In the file you can check the cuts and unions as per drmacro suggestions. Another approach: Duplicate the imported step solid. Use Boolean operations on one to remove the hook and fill as necessary. Then, on the other remove t...

something like that?
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