How do I show deeper processes in my portfolio?

After working for a number of years as a graphic designer, I moved into a "UI /UX role" about 4 years ago creating interfaces for large format touchscreens at an agency.

I’ve attempted to complete my portfolio countless times but keep becoming overwhelmed at the volume that is expected of a portfolio and all the elaborate case studies of UI/UX designer portfolios online - not to mention all the job postings banging on about showing your process.

All I've got to show is random small bits like styletiles, wire frames, simple user-flows and site-maps, I haven’t got much process or success metrics to show as we usually jump straight into doing hi-fidelity designs.

If I was to present my current work in an interview situation and was asked to justify any design decisions, the blanket answer would be that the MD or client wanted it - which is not ideal.

It’s become apparent that this job is more of a visual designer role as there’s an emphasis on creating interactive designs that focus on wowing clients so there are often usability issues as we rarely test during development or measure the outcomes.

So do i..?

  1. Present the work as it is without any process included?

  2. Do I ‘game’ the work in my portfolio by back-dating it with process and retrospectively creating business and user goals? Is it acceptable to do this? I would be honest when interviewed and state, "in ideal world, this is what I would of like to have done" etc.

Just an FYI, I haven't got the time to do completely redo my portfolio with side projects due to other responsibilities in life.

Many thanks