Hi Luca,
ATI Radeon cards should work fine with Vizard along with the latest nVidia cards. We are not aware of any problems with AMD processors. In general it would be a good idea to close most processes especially ones that take up a lot of memory. The polygon and texture usage has not been fully implemented yet, but will be working in the next release.
Make sure you aren't using any big textures. When I say big, I don't mean file size, but the dimensions (width x height). Also, make sure your texture dimensions are a power of 2 (i.e 16,32,64,128,256, etc..). If you have a texture that isn't a power of 2, Vizard might be rounding it up to the nearest dimension, which would increase the memory usage by a lot.
Another thing to note is that if you are adding the same object multiple times then you should consider cloning it instead:
Code:
for x in range(0,10):
object = viz.add('object.wrl')
Depending on the size of
object.wrl this could take up a lot of memory. Instead clone it:
Code:
original = viz.add('object.wrl')
for x in range(0,9):
object = original.clone()
Also, you might want to try removing certain objects from your world to see how it affects performance. This way you can tell where the problem areas are.
Good luck!