PoserPro 11.2, Win'10, 32 GB RAM +3½ displays (3@1600x900 plus Ye Olde Desktop PC's 1280x1024 time-shared via KVM switch.)

I did a lot with P_4, FloorPlan3D & TurboCAD then was out of CAD etc for a decade. Though I've a ½TB 'external' archive of my salvaged P4 'classics', later V4/M4 + landscape freebies and buys, P_11 is a steep learning curve...

I'm having problems with FBX models.

( Long term plan is to migrate a bunch of rigged MMD figures via FBX to Poser. I can do 'static props' via PMX Editor's OBJ+MTL export, remembering to mirror 'handed' models. But, I'd like them to stay rigged...)

The logical 'Drag and Drop' of an FBX into Poser gets as far as scaling input field and OK, then stops. I have to close Poser via Task Manager. 'Import' usually works for simple FBX props, though textures often need locating.

'Rigged' items are a pain. I've yet to load one that Poser really, really 'likes'...

Worse, some rigged FBX freebies seem to be 'munged', per how MMD models often were... https://connect.unity.com/p/free-3d-model-bh-2-robot Will not import to Poser. Will not open in AutoDesk's free FBX viewer. Will not export to static OBJ/MTL, as AutoDesk's free Converter reports a corrupted file. PAINT shows mesh okay, but lacks the tools to locate and apply texture maps, display or pose rigging. D'uh...

FWIW, that old, 'square-ish' display is very handy for more than File Explorer and Poser 'Help', as Poser has a nasty habit of over-flowing lower edge of my three wide-screens. I now have a 'button' to reset Poser work-space to convenient size and position but, following Win Updates, even that may be lost off the bottom. Why is there no default 'trad' size reset in the menus ?? Rather than muck about with Windows' clunky hot-keys, Plan_B is to drag Poser across my desktop until corner reaches the old, taller display, and can be seen....

Aha !! Found a free FBX that Poser sorta likes... https://www.deviantart.com/gs-mantis/art/Miku-Lite-Model-Download-480790573

Miku Lite FBX by GS_mantis imported to PoserPro11 at x2500 instead default x100. This gives 'adolescent' size, while x3000 matches LaFemme's height.

Have yet to figure FBX posing within Poser, but note improved lighting. Rendered with Firefly.

Textures just showed up, without prompting.

Have yet to figure how to scale FBX figures within Poser, as they tend to 'explode' when you try.

FBX files have an astonishing range of sizes. The Miku Lite came in at ~2500% scale. I've just imported a free plant-pot / urn at ~5% scale, chest-high-ish on LaFemme.

https://sharecg.com/v/94693/browse/5/3D-Model/Potted-Plant-Model

Really, I wanted to play with its normal map, which Poser can use for displacement rendering. Steep Learning Curve ensued. Eventually, I got a fair Firefly render, but Superfly came out fuzzier than the posing preview. Probably my bad...

Also, I must read up on using my twin GPU cards for 'clever' renders. CPU option, which is fastest for simple renders, maxed-out my PC's 8 cores for the plant-pot's displacement stuff. Which meant I had to take a leisurely tea-break while it worked...

This FBX model was well made, but many are not. Beyond a nasty propensity for FBX files to 'implode' or 'explode' on import, I am really, really annoyed by the number of models that seem to lack any internal structure. They are not ONE prop, they're not even this model's POT and PLANT. They're a heap of independent parts flying in loose formation. You gotta use the Poser hierarchy tree to multi-select such to delete the model. Else, like C&W song, 'One piece at a time', it takes a while...

"Huh ? Am I imagining this ??" One 'gotcha' with some FBX import is that the model's 'animation' flag may be set. I'm shaky on the terminology but, unless you notice and set 'loop' off, Poser response may become slo-mo, while camera v-e-r-y s-l-o-w-l-y pans away. And, sometimes, slants, too. Big clue is any flickering FBX texture...