The Pcg Solver Has Automatically Set The Level Of Difficulty For This Model To 2 Fixed -

: It is ideal for large models (millions of degrees of freedom) where RAM is limited.

Why does a solver look at your geometry and decide it is "Difficult"? There is rarely a single culprit, but usually, it is one of the following physical realities: : It is ideal for large models (millions

For the user, this message is a status report on the "negotiation" between their creative intent and the software’s mathematical limits. Setting the difficulty to 2 is a "Goldilocks" moment: the model is complex enough to be meaningful but structured enough to be solvable. It signals that the solver has found a viable path through the constraints, allowing the creator to proceed with the confidence that the underlying architecture is stable. Setting the difficulty to 2 is a "Goldilocks"

If your mesh contains elongated triangles or rectangles (aspect ratio > 10:1), the stiffness matrix becomes anisotropic. The PCG solver struggles to propagate information across the long dimension. Level 2 indicates the solver is compensating but still has confidence. The PCG solver struggles to propagate information across

A well-conditioned system (difficulty level 0 or 1) solves quickly and accurately. An ill-conditioned system (difficulty level 3 or higher) requires many iterations, may accumulate rounding errors, or might not converge at all.

Meshing