World-space system inheriting velocity of game object?

Hi there! Reviving this as well…
I tried to use your approach, Orson, and it works somewhat. I have a weird issue where it seems to only work for some particle emissions. If I have a constant emission rate only some of the particles actually inherit the velocity, and if I instead use a burst only some bursts of particles inherit the velocity. For the burst either all particles of a burst inherit the velocity or none do, which is a bit weird. I’ve just used a burst in the gif below as it clearly illustrates how some of the burst inherit the velocity while others don’t. I’ve also added an image of the graph as well as the editor in case something is set up incorrectly. Hope you can help, thanks in advance!

fdwsnu

I can’t really figure out how to add images to the post… So I’ll just post them as attachments