Too fast to relax! 300 FPS on my computer! But this save is good. 60hz/60hz +1
LBPHacker: yes/ thank you for the tip
You can also go subframe with this, id:2044883 . You can hide the solid sparks by copying them with DRAY from a black source spark. You can make one of those with CRAY and black FILT.
protip; layer black-decorated, zero-velocity energy particles in the areas you don't want particles seen. (energy particles are not pushed/pulled by PSTN, and elements can be pushed/pulled under them.)