GPU Particles cannot be used properly in 4.15, because the option to use a FixedRelativeBoundingBox in Cascade does not work correctly.
The Fixed Bounding Box is always at the world origin and has no size at all.
This is also related to another issue I posted recently:
Video of Issue: https://www.youtube.com/watch?v=2-57tdYqTbM&feature=youtu.be This is a problematic bug, because you can now no longer see what the bounds of a particle system are when you’re trying to set them, which is absolutely critical to...
Still an issue in 4.16 P3
If you update the fixed bounds using the “Set Fixed Bounds” option from the toolbar this issue will go away.
It’s a pretty horrible workflow pitfall, sorry about that.
I’ll take a look at if we can improve it.
Oh that’s odd… I’ll try using the toolbar version. I hope I can still set the bound values at least.