Since buying Poser a year ago, I've just been using the Main camera to look around my scenes because it's the only one that runs smooth as silk no matter how many objects are loaded.

I just bought a new 1 GB Geforce GTX 560 Ti in the hope that it would improve the OpenGL performance of the Preview window, but every other camera except the Main still behave like a slide-show when I load one of my projects.  I re-installed Poser, but that didn't help.  I installed the latest drivers from nVidia - v275.33 - right after I installed the new card.

Is there anything else I can do to smooth out those other cameras?

try changing to Sreed instead of opengl.

Quote - try changing to Sreed instead of opengl.

No improvement.

You may have a setting sensitivity problem the little arrows on the far right when the camera menu is activated, click on it then on settings and adjust sensitivity of the z, x, and y orbits  Jan

Quote - You may have a setting sensitivity problem the little arrows on the far right when the camera menu is activated, click on it then on settings and adjust sensitivity of the z, x, and y orbits

I select cameras using the drop-down menu inside the top-left corner of the preview window, and use a 3D mouse to fly around my scenes.  Nevertheless, I tried your idea, and there was no improvement.

I decided to check the reference manual for a better understanding of the differences behind the cameras.

I was unaware of this until now, but the Pose camera is actually designed to rotate around the currently selected figure, not the whole workspace.  The Auxilary camera - which I've never bothered with - serves as a compliment to the Main camera to give artists an extra camera to explore their scenes without having to compromise the Main camera once they have it positioned.

The Auxilary camera behaves just as fluidly as the Main on my PC, so now I have two cameras I can work with - the Auxilary to explore my scenes, and the Main to set up the shots.  Problem solved!

:D

and I didn't really know that either.  Thanks Nyghtfall and now when other folks have that problem you can jump in.  Jan

You might also try the Dolly Camera it is a free camera. It will fly a little differently with a 3D mouse but once you get used to it you will probably use it all the time.

Another thing that may help you is the camera dots. Click the little arrow by UI dots and pick camera. These are a fast way to save a camera view. Click an empty dot to save the current view. Alt click to erase a dot.

You may also want to have a look at my Camera Python script in freestuff (Poser 8/Pro 2010), if you encounter lag when switching between the different camera controls. It'll allow camera movement without using the controls (you just have to press shift and or control and move the mouse or use the middle mouse button, and zoom in using the scroll wheel ;-)).