How can I get my Iris Filter to reproduce this result?

@windspear , my guess that the problem is not different TVAI versions that have different AIa even though they share the same version, no I don’t think that is the cause. my explanation of what might had happened is the “Auto” prediction values had changed with certain versions.
If you noticed, you used Auto mode. in Auto mode, TVAI tries to estimate what would be the best values every 8 frames for the intake source (in older versions it was once every 20 frames).
what might had happened is that TVAI when versions went up, the Auto prediction algorithm had changed (improved based on Topaz) and now it sets different values than how it was before.

The way for you to confirm or dispel this theory is by installing the older version which worked fine for you, run the upscale in Manual mode, press estimate button at the top of the values in manual mode and then run the upscale.
if that would upscale as you predicted (close enough), try running the same manual setting on the newer version and see if it yields the same results. If it does, then you know it is the Auto prediction settings that had changed, not the AI enhancement itself.
You can compare the results by using the Video-Compare tool between the 2 exports. just make sure you export them at the same codec & quality as much as possible to be fair on the comparing task.