rigid body physics crashing help

Question

Hi I am new to physics simulations but I am following a tutorial from this one youtuber and I am trying to apply what I learn to this current project. I spent the last couple days trying to figure out why blender can not handle the simulation but the steps followed are from the first 2 mins of the YouTube video below. The end goal is to have the company name as seen on screen left shoot into the particles as seen in the middle and have them flying. I even tested it on 80 particles but blender crashes on frame one. This is 2k particles. I wouldn't think I would crash on my 4070 ti Nvidia Geforce Graphics card so I am confused. My Internet is the top speeds as well. Any advice to fix this or should I try a different approach? Thank you. 

Tutorial- https://www.youtube.com/watch?v=kl99nsWN2tY&t=120s

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  • Martin Bergwerf replied

    Hi Brandon,

    Blender Not Responding is not a crash. Also, I think that Physics calculations are not done on your GPU.

    My first guess, would be to look at your Turbo Tools Addon.

    1 love
  • Brandon (Brandon123) replied

    ok, but it won't load at all the simulation. I did remove the turbo tools and same thing. The tutorial had me make the spheres a active rigid body type as the last step. But also as one of the steps I was told to make the instances real from the particle system plane. 

  • Martin Bergwerf replied

    Hm, I don't know, the screenshot is with more than 13000 Spheres (not 2K) and that is expected to be slow, but with 80 Particles it shouldn't be a problem at all....

    Try Cubes instead of Spheres and make sure to change from Convex Hull to Box (for all of them, of course).

    Also not sure if the Text shouldn't be converted to a Mesh?

  • Omar Domenech replied

    My go to technique when stuff like this happens is to grab everything, copy, open a brand new blend file, and paste. Usually that works in leaving the bug behind on the blend file we escaped from.

    1 love
  • Brandon (Brandon123) replied

    I will try to work with just cubes for the simulation first as that's what the guy in the tutorial did anyways and I think you are on to something omar about starting a new file after the simulation setup. But how do I change all instances to a box shape then the convex hull? All would be selected with a red outline and only the one orange outline would change the shape from a convex to box. I think there is a way to get that working though with the selection. But maybe I need to start the sim with a cube and maybe zero size randomness until I am ready to switch to a sphere? Keep the instances in the particle system below 100 and duplicate the layers? I will try some more things tomorrow. 

  • Martin Bergwerf replied

    Yes Brandon, it just changes the Acttive Object (the orange one) by default, but you can press and hold ALT when changing that and then it should change all Selected Objects. But check with one of the other Cubes, to see if it actually worked. (Sometimes the ALT Key is overwritten by something else..Addon, or OS, or by 'Emulate 3 Button Mouse', or...)