Set up:

• mid 2009 17" unibody MacBook Pro
• 4GB RAM
• 2.66 Core 2 Duo
• Snow Leopard 10.6.6
• Lightroom 3

When working with 12 MegaPixel RAW files from a Nikon D700, no problem. Lightroom is fine.

Recently I've been scanning film and they result in large tiff files, about 130mb each. The tiff files themselves are good, and I'm happy with my scanning workflow.

Working with these files in Lightroom is perfectly fine, except for one step.

When I choose one of these photos in the Develop module, Lightroom displays the "Loading" on the image for about a minute or two, which is quite long.

Once the image is loaded, then everything is fine again, and applying effects is instant.

So my only issue is reducing that "loading" time in the develop module (the library module is fine too).

Will increasing my RAM to 8GB help? I'm worried about spending the money and it not making any difference.

thanks

andy