And also, I have a 1.5TB RAID 0 as my slave, 1.5 SATA hard drive as a backup to my RAID 0 slave, and a SATA hard-drive for OS and programs.
Set Noise Reduction (Luminance) default to zero. Only apply at the end.
You might find some useful tips and tricks in this article How to tune Photoshop CS5 for peak performance
Thank you for your help.
I found an adobe link on how to optimize lightroom and followed some tips there that are applicable to bridge. The notable setting I tweaked was to change my cache directory to my RAID 0 drive, and increased cached size to the maximum setting. The difference is night and day, and I am extremely happy now. The only thing that still bugs me a little is that there is still a slight delay cropping when the vignette is not set to 0 . I can understand that's a little extreme though and I usually add the vignette at the end anyways.
After making the tweaks, I was able to slide the settings with instant previews even with Noise Reduction (luminance) set to zero.
Thank you for the link, I have seen that before and followed the directions. I upgraded to 16GB of RAM two weeks ago after reading the tips.
Thank you guys again..
Can you try to be more specific about just how much delay you're seeing?
I have older Xeon x5460 processors in my workstation and I don't see an unacceptable delay. I wouldn't call it "butter smooth", but it's quite interactive and I don't find myself overshooting slider adjustments. I see no more than maybe 1/10th second delay when the image is shown completely in the preview pane. A zoom operation itself yields more delay - on the order of maybe 1 second or a hair less, but once it's zoomed I again see maybe 1/10th second delay when moving sliders. Quite acceptable.
In your Lens Corrections setting, do you have any Distortion Correction Amount? Try setting your default to 0 for that setting.
Try the Photoshop CS6 beta. I find responsiveness improved a good bit in that version.