Hi

I don't have PP2014 any more, but here's what you should check:

Open Up the Render Settings Dialog, select the "Preview Tab"

Down left: define the Render Dimensions of your choice and validate:

Select "Render Now (Preview)"

PhYl.

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Win10 on i7 8700K@4.3Ghz, 64Gb, Asus TUF Gaming RTX 4070 OC Edition, 2x 2Tb ssd + 6+4Tb hd  + 1x 8Tb hd + 1 10T NAS, Poser 11, Poser 12  and now Poser 13