Inconsistent potential values with batch simulations

I am trying to run a batch of simulations for a SC with varying sun directions on SPIS 6.2.6. On its surface, the SC has a particle detector with a large face biased at -8V. The main global parameters changes I made are as follows:

-1 electron and ion population, both with densities and temps at 10 cm-3 and 10eV

-Photoemission turned on (3)

-Varying Sun direction (sunX, sunY)

I ran one simulation through the SPIS GUI to test and make a control. Then I used this simulation to take the circuit, mesh, and groups files to create a folder for my batch runs to take from, as per the documentation and from premade scripts. This script was launched via terminal.

The batch simulations ran well, but when I checked the final SC potential, it is way off from the potential I had from the control run (comparing to the batch run with the same sun direction). The batch run gave me a potential of ~6V, and the control run had ~10V.

The batch runs are using the same exact files from the control run, so I am not sure why they are giving me different results. Could someone help explain why launching a simulation from the GUI gives different results from launching from the terminal? I can provide more details if necessary.