Finding and Defeating Texture Lag?
Off Topic
Region performance is always a fascinating subject (to me anyway) though I'm afraid that I've forgotten a lot of the particulars over the years.
I don't believe that I've ever actually had a lot of lag caused by textures. For the most part they sometimes just grey-out for a bit without effecting overall performance. It sounds like you've been keeping a pretty close eye on them, res-using etc. so I'm wondering if it might be something else.
There use to be a problem when a region ended up sharing a server with other "over consuming" regions. Don't know if that is still a problem but it was sometimes fixed by doing a restart that subsequently bumped it to another server.
I'm also wondering about the complexity of objects you have - you wouldn't be using a lot of sculpties or tortured prims would you? Sculpties are/were wicked in some cases because they only counted as "one prim" even if they had a ton of vertices.
Just some thoughts off the top of my head. Looking forward to seeing other suggestions.
Good luck!
was just released this week!