hey @garettpw
im not too familiar with the setup you are trying to run, so maybe another power user can jump in. However, on all of my simulations i turn on Potential foam initialization which helps speed up convergence.
I also see your using 8 non- orthogonal corrector loops which seems a bit excessive. I dont think that so many should be required so i think there is another problem , maybe in the solver settings, for why the pressure residual is fluctuating so much. Just a guess, not an expert on this topic at all.
Either way try running the sim again with this setting on and see how it goes. Maybe this simulation needs to be run for longer so that it can achieve convergence so try running to 3000 or 4000 iterations. It uses only a few core hours so shouldnt be a big problem
Dan