Problem inflating locked soft bodies

[ALZHEM]

Hi there!!!  

I'm still quite a noob with tyFlow and I found another hiccup that I can't overcome I do hope someone will know how to help me.

The goal is to pile up a bunch of viruses (soft bodies), so they squash each other making it much more realistic.
As I wanna control the pile I set up some placeholders spheres exactly where I want them.
My plan was this:
- Create particles, one per placeholder sphere
- Scale them down to 50%
- Start growing them slowly
- When they collide, they will deform and adapt to each other, but still in place

What happens? Well, All goes well until I add PhysX and then that "lock" to the placeholders breaks and gravity and pushing each other break everything.

Images attached:
a) Placeholders
b) Scale up working well, not interactions
c) Interactions, but all scattered, not respecting the original location

Any help would be hugely welcome!!!

Thanks!

[tyFlow]

You can disable the default gravity and ground plane for PhysX in the tyFlow modifier panel (in the PhysX rollout).

[ALZHEM]

Thanks for your answer! I already tried that, but unfortunately all those sphere will push each other away. I would love to find a way to lock their pivot while they inflate.