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LMR51635: PAINFULLY slow spice simulation

Part Number: LMR51635

Tool/software:

I am trying to simulate this circuit on PSPICE for TI on Cadence (couldn't get to work on TINA - encrypted simulation file)

The simulation is VERY very slow, its been nearly an hour and its only done 25%. I have tried changing the GMIN, ABSTOL, etc values and its still too slow. There used to be an option to skip starting sources at 0V, which sped up simulations, where is that option?

I have tried searching for other ways to speed it up, but always comes back to changing these values, which doesn't improve it at all.

All I want to do is to check that I can change the output voltage for the same inductor value and same load (3A), as I need this design to have an adjustable output.