Could you tell me how much the calculation time can be shortened?

It can help me and other users to detect wrong configurations or points where the actual set up could be improved to increase the speed.
File Benchmark.pmx. Maximum element size adjusted to 4mm.

11/13/22 21:42:00 Nodes: 82592
11/13/22 21:42:00 Elements: 54076

screenshot.89

Win10
16 Gb (15,4 Usable)
Nº of CPU Cores 8
Nº of Threads 16
Base Clock 3.3GHz
Max. Boost Clock Up to 4.6GHz

Best runs:

CalculiX Version 2.19
Pardiso_MKL
True CCX_NPROC_STIFFNESS 12
True OMP_NUM_THREADS 4
True CCX_NPROC_RESULTS 12
Total CalculiX Time: 15.57s

CalculiX Version 2.20.
Pastix (without mixed precision)
True CCX_NPROC_STIFFNESS 6
True OMP_NUM_THREADS 6
True CCX_NPROC_RESULTS 12
Total CalculiX Time: 14.11