Software rendering option now gone from SHIFT on startup screen

I do a lot of work between Photoshop and Premiere.  Creating layers in photoshop, then importing them into Premiere.

I work on a laptop, it's a high specification and about a year old.

When I import Photoshop documents, the layers are stacked on the timeline to that I can introduce and animate these layers on the Premiere timeline.  Been doing this for years without issues, until my Premiere automatically upgraded from version 25.5.0...

I'm unable to export these projects without the 'software rendering' option.  One of the below happens during export:

1) Whilst exporting, Premiere just freezes, CPU usage stops and it's obviously stopped exporting.  I can click cancel, but can never export the project.

2) If I leave it long enough, sometimes an error appears "Accelerated Renderer Error - unable to product frame, around timeline: XX:XX" which is always the multi layering parts of the video.

After a lot of research, I use the 'software rendering' option, which WAS available from the 'shift on start up' menu, then the last option.  Rendering obviously took much longer, but it always worked and that was my solution.

However, since version 25.5.0 this option has been removed.  I've had to uninstall, and revert back to 25.5.0 to get that option back, because I can no longer export all of my complicated projects.

I was told by tech support to disable 'GPU accelerated UI rendering', but this doesn't seem to be the same thing and had no effect.

Could you please bring back the 'software rendering' option please?  The 'shift on start up' menu was an ideal place to put it - those users that don't need it, don't see it.  I use it.  If a project won't export, turn on 'software rendering' and 99% of the time, the project with then export without any issues.

Without it, I'm currently stuck at version 25.5.0 and cannot upgrade.

Please bring the option back, thank you.