Works fine for me. Unless I'm in a crowded sim, (the crooked 1.0) shadows come along for the ride... ALM is turned off when I'm playing an in world game or driving a car.

I keep it on all the time and my computer is a gaming computer so it handles it very well.

I only turn it off when I absolutely must because the FPS are so low that it becomes hard to move or do anything. It's a few things like shadows that I only have on for photos.

In regions like Luxor that are done properly and according to Advanced Lighting it is fine, but in a shop or club it is just inadequate and obtrusive.

I always have it on and I always build my regions to reward those who use it, including adding custom eep's

things look nicer to me so unless im lagging hard like at a big event or something, i usually wont turn it off.