Matlab R2021a, run m files "GenerateNavFilterEquations.m", stuck in [PP,SPP]=OptimiseAlgebra(PP,'SPP'); I have spend about 30hours run this code. The index loop to 7800, and still not finish. I have updated the function "OptimiseAlgebra". Any one known where is wrong?

Matlab R2021a, run m files "GenerateNavFilterEquations.m", stuck in [PP,SPP]=OptimiseAlgebra(PP,'SPP'); I have spend about 30hours run this code. The index loop to 7800, and still not finish. I have updated the function "OptimiseAlgebra". Any one known where is wrong?
