As mentioned by @Still_Learing, we discussed about TI opamp in this post and the best solution so far is to skip .op by adding UIC in .tran directive. My impression is that, the major reason simulator got stuck in calculating dc operating point, which is performed before .tran. Here is the post for reference
Source Stepping Failed - OPA2991 Sim - QSPICE - Qorvo Tech Forum
If you take a look of TI opamp sub-circuit, you can observe it uses a lot of tables and switches, possibly that is what the challenge come from.
As a user, I don’t have much can do. Please consider to email your circuit to Mike to see if any further treatment in Qspice can handle TI opamp pspice model. You can find his contact in Qspice : HELP > About Qspice