I have been using LR to process raw files and the program really slows down when I use the adjustment brush or any of the manual adjustments in this pane.
A well known problem. Lightroom slows down as you apply lots of adjustments or spot healing to a photo. One solution is to do the brushing in Photoshop or Photoshop Elements. Another possibility is to turn off any lens corrections before you do the brushing, then do your brushing as the next-to-last step of your editing, and then as the last step turn the lens corrections back on. Another solution is to get a much faster CPU.
In my opinion (I am not an Adobe employee), the non-destructive methodology used fpr brushing and spot healing in Lightroom has reached the limits and gone beyond the limits of what the hardware can support.
Thanks to both dj_paige and Tanuj Sandal. Both of you have given me good advice concerning the LR problem. After a few tests I can see how the order that adjustments are done certainly makes a huge differance in speed. Looks like I still have a lot to learn about this program.
Thanks again to both of you for these prompt answers.
You are Welcome, Glad to help.