1 files changed, 5 insertions, 0 deletions
diff --git a/extern/mantaflow/preprocessed/plugin/pressure.cpp b/extern/mantaflow/preprocessed/plugin/pressure.cpp
index 7def2669e36..780ba44a2b5 100644
--- a/extern/mantaflow/preprocessed/plugin/pressure.cpp
+++ b/extern/mantaflow/preprocessed/plugin/pressure.cpp
@@ -1171,6 +1171,11 @@ void solvePressureSystem(Grid<Real> &rhs,
     maxIter = 100;
 
     pmg = gMapMG[parent];
+    // Release MG from previous step if present (e.g. if previous solve was with MGStatic)
+    if (pmg && preconditioner == PcMGDynamic) {
+      releaseMG(parent);
+      pmg = nullptr;
+    }
     if (!pmg) {
       pmg = new GridMg(pressure.getSize());
       gMapMG[parent] = pmg;