Here’s another question:
How do I find shaders for particle systems, which is key for me
Probably you could describe your question in more understandable way? ![]()
For the second question, you can create custom shaders for particles. See:
You can also use the node material editor for that:
https://doc.babylonjs.com/features/featuresDeepDive/materials/node_material/NMEParticleShaders
For your first question, do you mean you want the particle system to stay at the same location/orientation, independent from the camera? If so, you could create a second camera that would render only the particle system and that would not move/rotate.