Hello,
Yes have always created V2 rather than V4. Other apps are Capture one, DXO labs 4, Affinity Photo, Luminar v3 (not 4), On1 v10, NX Studio for a start.
I have however abandoned iprofiler tonight and re-profiled via DisplayCal which seems much better and consistent in all? This makes no sense to me at all but Photoshop has been declining since many of the 'greats' have passed and behaves oddly now and then needing resetting or re-installing. Particular the heal tool which seems to have a mind of its own?
Anyway, I held back from asking about this as I did think myself it made no sense and likely (correctly) I would be cross-examined on who, what, when and where lol.
Looks like issue is fixed by DisplayCal so thanks anyway.