In our AR app and appclip made with SceneKit, we experience z-fighting with particles and another transparent object (a transparent plane faking a bloom effect around one of our models). We tried to change the sorting mode without success. Moreover the z-fighting appears only on iPhone (tested with an iPhone X) and not on iPad (tested with an iPad Pro 2021).
Here is a video showing the problem and a screenshot of our rendering settings for the particle system : https://drive.google.com/drive/folders/1fvyHRVfprw606qnQSRaLuDjtY1hN8_f2?usp=sharing