by rdb » Fri Mar 23, 2012 3:46 pm
Nodes don't directly cause performance issues, it's the number of geoms that are (partly) in view at any given time. This shouldn't be more than a few hundred. You can use PStats to monitor these things.
Keep in mind that flattenStrong can cause performance drops when not used correctly, because culling can no longer be performed on flattened nodes.