hi
PrecipitFX is free for new sunderstorm lights
https://fsfxpackages.com/en/free/on my computer
need to copy and paste in safe your 11FX effect original, and delete the 11 FX in the folder Effect , and then paste the new , that it's good .
Don't paste the 11 FX in Effect Folder, without deleted original FX in Effects........ result = don't work
Patrick