Note that it's important that the argument -a follows -s and -e otherwise it won't work.

Thanks... unfortunately option 1 is not an option for me because I'm using different modifiers an the objects. Oh well.. copying all objects it is then.

Mh ok thanks @moonboots So if I'm not mistaken I have two options? Either assign vertex groups in all individual objects and use the armature modifier, or apply the mirror modifier and parent the individual objects (a process, I will have to repeat every time I make a change to the model).

@moonboots that's what I had initially, but that doesn't work with the mirror modifier, does it?

@moonboots maybe I'm not understanding what you're saying, but that means that I still have to assign all vertices to a vertex group right? So every time I have a new object I need to assign it again?

@vklidu the blender file is really big, because it contains high-res models and the simulation data is ~5GB. The Red part generates the exact same diamond artefacts, it's just not as visible. I have 6 simulations in total, with the exact same problem.

I tried with 128 but the diamonds were just a bit smaller.

@Rakeshchoudhary Mh, I had 96 as a resolution. You think that this could be the issue?

@Jonas I tried different resolutions yes.

Yes I was talking about the baked FLIP particles. Ok I see... that's unfortunate, but so be it!

You're welcome. Glad it worked for you!

IMO the reason your holes aren't completely transparent must be because in your texture the holes aren't completely black but light grey. You can most likely solve this by adding a Color Ramp after the texture.