How well does AGS work with large scrolling backgrounds?

[October]

I'd like to put my character in a giant scrolling orthographic landscape (the game set at 640x400 resolution, but with at least 20 times that size in area) with many items contained within that area.  Is that going to cause problems with AGS or require a very fast computer?

[Derrick Freeland]

I did this in my game.  I don't know if the area that I used is as large as what you want to use, but it's pretty big (6350 px wide, 1200 px high).  I just set my game to 800 x 600 and used this image as a background, AGS will automatically scroll the bg as your character walks around, so I'd say it works really well.  Here's some footage if you want to see what it looks like:
http://www.youtube.com/watch?v=3D2-1KXurQ8

[Matti]

I use a 1024 x 25000 background (at a 1024 resolution) and it scrolls quite well.