Penny Patton has a new article out on building with mesh. See: Mesh Content Creators, You’re Doing It Wrong! She is so subtle.
Penny has a region named Milk and Cream (Adult NSFW). She has been rebuilding this area and replacing sculpties and prims with mesh objects. She is finding the general FPS rate has in general increased from 15 to 30. Her prim cost (Land Impact Cost now) has been cut in half; allowing her to add more stuff. Plus mesh things can be much more detailed. When the Materials System goes live the amount of detail will increase enormously.
Penny has a thing about building to scale in Second Life. I’ve written about her articles several times. Her point is that if one builds to scale they can have more stuff in a region. Also having things properly scaled can reduce the Land Impact Cost. The LIC of mesh goes up as the scale is increased.
The main thrust of her article is about how people are scaling mesh objects up to work with the over sized avatars many SL users wear. That is significantly costing them additional tier and reducing the amount of content they can have in a region.
Check out the article and then visit Milk & Cream. See if Milk & Cream provides better performance than other areas of the same complexity.