I have a problem that when I have multiple overlapping sprites from particle effects with transparent materials, they interfere with each other. E.g. I have a transparent water splash material sprite and a water foam material and even though the splashes are in front of the foam, the foam makes the splashes look like they have a very low opacity. I assumed this was a sorting problem so I tried sorting methods like View Depth or View Distance, which did not change anything.
In the image you can see that the brown water splashes are hardly visible where the foam is and have a high opacity, as it should be, where there’s no foam like in the middle or top left. This happened to me in a variety of particle effects with transparent materials and I already tried out quite a few options in the translucency settings of the materials. Any help is appreciated a lot! 
You can set the transparency sort order in the mesh details. Here you want the column = 0 , splash = 1 and water = 2.
In the case of the splash, it’s probably a particle, but then the transparency sort order is still inside the details in the emitter.
Thanks for the quick response! I tried it out now and the translucency sorting also works for particle systems. In another example, this approach doesn’t solve the problem unfortunately. I have a smoke in front of splashes of oil in this case and I want the smoke to be rendered in front of the oil splashes. The splashes have a translucent material and are fully opaque around the center. But if I place a smoke effect in front, it’s as if the smoke would subtract/reduce the opacity of the splashes behind it. Then, the splashes are see-through even though they weren’t before.
In the image you can see that the rim of the oil circle underneath is visible through the splashes
Hmm, not sure about that one, it sounds a bit like it might be material related. Did you write the materials? Do they all have the same structure? ( I mean the details panel related to the main material, the modes and translucency settings there.
Yes, the materials were all done by me and are pretty basic. The only thing I changed is the blend mode to translucent, the rest is on default settings. I also tried around with the translucency settings to find a setting that solves the problem but couldn’t find one.
Ok so I found out that it was actually two separate problems. The first one was, as you said, a sorting problem. The second one was because I had a depth fade on my smoke material, which somehow interfered with the other transparent materials behind it. Not sure why that is but I’m glad I know the reason now. Also thanks again for the help
