Use edge meshing and change try to redistribute the nodes in a way to increase the angle between the intersected lines.

If you have meshes with greater degree of skewness, the calculations of mass flow at one face with the pressure gradient of neighboring cell becomes difficult to predict. Since, we do not know the exact pressure variation and its correction factors along the cells, therefore a factor is considered called PISO neighbor correction factor, which actually adjusts the skewness of neighboring cells (skewness correction), and therefore calculates again the pressure correction gradient, giving better results.

However, it increases the time of simulation.