Abaqus - Accuracy of the solution?

Hi,

I used one of ABAQUS sample example input files named " hydrfract_xfem_c3d8rp" related to hydraulic fracture simulation in a rock and I ran the file but the problem is the history output frequency in the file is 20 and the pore pressure curve seems logical but when I put frequency to 1 and run the file the same history output curve becomes very unreasonable. I decided to refine the mesh and see if the accuracy will increase and it helped a bit but still not enough and my problem is that when I refine mesh a bit more, the run aborts and gives error too many attempts. How can I increase the model accuracy? Any advice is appreciated.

Thanks

Abaqus ​​​​​​​