The best approach is to upload the model you are experiencing issues with for the community to review. We just had a case where @sergio.pesenti narrowed down a convergence issue, and it eventually turned out that Mike could make a change in QSpice. We have talented people in the community to help.
JFET op-amp circuit import unsuccessful - QSPICE - Qorvo Tech Forum
It is also common in SPICE to tweak certain parameters to run a TI model. From my point of view, TI models are quite complex. In particular, PSpice does not support digital devices and they have to implement logic with B-sources, which makes things more complex.
Well, my experience is that simply sending a TI model to Mike and saying it is not working generally won’t help. But if the community can narrow down the issue and troubleshoot it to a certain level, sometimes we can contribute to helping QSpice improve. Just like your case, where you reported it to the community once you observed the Qspice performance changed.