Was okay until I re-imported a big FBX file to check scaling, then UI stopped responding and GPU went to ~55%, required hard exit.

Imported same FBX previously saved parented to dummy character. Similar but not identical sequence ensued.

Log shows nothing beyond the standard commands.

FWIW, I've even 'killed' the main-camera animation sequence lest that was responsible. No joy, not a clue. Ideas welcome, even on a '4x2'... ==

My current nemesis is a $3 budget robot from CG Trader. The FBX model (version 3) is hi-poly, high parts count, but not fully rigged. FBX is ~13 MB, imports inverted at ~1% scaling, requires parenting and 180º flip. Library CR2 ~48 MB. Loading one requires ~1 GB. Two plus LaFemme ~ 1.7 GB.

If Poser 'plays nice', superfly render with non-optimal lights but 24 pixel samples and 'progressive' gave

Ha ! Deleted both robots from scene. Reloaded one, side-shifted, loaded second. Lock-up and view-drift ensued, RAM usage soaring to ~1.9 GB before dust settled. Which is ~200 MB more than prior. A third loaded eventually, without camera drift, but taking P to ~2.5 GB. Fourth needed less RAM, 4@ + LaFemme ~ 1.1 GB total. Which makes no sense to me...