I have a model with closed surfaces and polysurfaces without any special textures or lighting applied. Flamingo nXt 5.5 used to create a nice shaded render, but now it looks like a mass of shards.
I’ve uploaded to images from the same viewport, one the “Arctic” display style and the other the result from Flamingo nXt 5.5.
PS! You do know you can ViewCaptureToFile to larger than viewport size with the scale option? That way you can have superfast Rendered mode and Arctic mode images straight to file, or to clipboard if you like (ViewCaptureToClipboard)