Sandsimulation - Problem withc simple Geometry-Node Set up

Hey Folks

Im make at the moment a Sandsimulation where the sand falls down on a Sandcone but theres a Problem when i render the Scene also when im in Viewport ,

there are some squares where the “Distributes points on Faces” not work on the Cone and i don tknow why i never saw this before

when i disable this geonodes setup in viewport and activate again it is away sometimes …but its still there in the next frames

when i render the video it flickers trough the whole video

i hope somebody can help me

thanks :slight_smile:

maybe provide your blend file so we don’t have to guess what you have done?

maybe i solved it i will see it tomorrow after the render, if its still there i will upload the file

okay u could not solve the problem
its really frustrating

it happens really random

here the link for the blendfile

i hope somebody can help