Hi Steve and Keith,
Many thanks for your comments.
The 3D Setup I'm using is the Software Basic settings. The Enhanced setting emerges much more slowly with no improvement in quality. The still frame image with Sketched/Renderer/Software Basic is fine and is of same quality as I got from v14 on Windows XP using Hardware Accelerated. But now on Windows 7 (recommended to me!) the images using Sketched/Renderer/HWAccelerated looks like something out of the Simpsons! - and no good for showing clients. Didn't get that with XP! I do get a decent still frame image but that dissolves into wire frame as the image moves and then returns at the next still frame position.
Didn't really have many issues with v14 + XP (user since 2008 so not so much of a newbie!) but that computer crashed and XP is no longer supported anyway. I use 3D primarily for my own purposes for viewing the model as I build so I don't really need high quality output with landscapes and haven't explored 3D much beyond that. But I do still send PDF's of the still images to clients and it would be good to get back to the standards I had with XP so that I can move windows, doors etc on the model which I can't do anymore.
As you both say it's probably the graphics card not up to speed as everything in 3D mode is much slower and is affecting my productivity. I'll get onto my PC guy in town and pass on your comments.
Really like this Forum, by the way, which I dip into from time to time.
All you guys are wizards in my eyes!
Best regards to all of you.
Bill Beatson (not yet retired!)