If you are using the Houdini Niagara ROP to send hit data to Niagara, you will always need to check the IMPACT ANALYSYSYS checkbox here. Right?
However, if this checkbox is checked, the simulation time will be fatally long. Moreover, this hit data cannot be cached, so if you reopen the file or change a part of it slightly, you have to redo the simulation again, which takes a huge amount of time. Each time.

Moreover, this data cannot be used as is, and it is necessary to delete points from the previous frame using such wrangle. Really?

Am I using it wrong? I am very confused about the correct way to use this ROP, perhaps because it is limited to UE4. Please can anyone help me with this?

https://vimeo.com/479992530?embedded=true&source=vimeo_logo&owner=1723479 [vimeo.com]

This is the kind of video I was referring to. I think this procedure will work somewhat well with a very small scale RBD. However, if I do this for a more complex RBD, the computation time will balloon enormously and my day will be spent just waiting for the IMPACT ANALYSIS. Any advice on how to go about this?