https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12763101#M429 <P>The sim might be going unstable. Can you try with more substeps?</P> Thu, 09 May 2024 16:08:17 GMT morten.bojsen-hansen 2024-05-09T16:08:17Z https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12762273#M428 <P>Hi I have a complicated scene with gels liquids and sand MPM &nbsp;after about 150 frames the particles that are in the scene stop moving, new particles that are added to the scene after 150 frames are emitted but are not affected by influences. I have tried to reduce the number of particles in the scene but it makes no difference - so Im starting to think that its maybe max voxel movement settings or time step accuracy - anyone any suggestions ? I have tried to fix for 6 days now ! wearysome&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 09 May 2024 08:40:01 GMT https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12762273#M428 thomaslisle1309 2024-05-09T08:40:01Z https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12763101#M429 <P>The sim might be going unstable. Can you try with more substeps?</P> Thu, 09 May 2024 16:08:17 GMT https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12763101#M429 morten.bojsen-hansen 2024-05-09T16:08:17Z https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12763111#M430 <P>Hi I added more sub steps and made my fluids more viscose and added some drag and it seems fine now thanks&nbsp;</P> Thu, 09 May 2024 16:14:18 GMT https://forums.autodesk.com/t5/bifrost-forum/mpm-solver-stops-working/m-p/12763111#M430 thomaslisle1309 2024-05-09T16:14:18Z