Try turning Auto Mask off and tell us what happens.
Basically I've been using Lightroom 5 for quite a while and suddenly the Adjustment Brush is almost useless. It processes for 2 to 10 seconds with every movement. Sometimes my adjustment is carried out, but often times it doesn't work at all. Even changing the settings for the mask can cause it to go into a hyper slow/think mode. It's making the application useless.
If you are doing a lot of brushing on a photo, this is a known problem in Lightroom.
Some things you can try on new photos:
- turn off the auto mask
- do the brushing as the next to last editing step; and the last step is turning on lens corrections
- do the brushing in Photoshop Elements or Photoshop
- get a faster CPU
Here's the crazy thing,
Using the adjustment brush on a high end machine should not bring the machine to it's knees. There has to be some sort of memory leak that is causing this when using multiple adjustment brush layers.
I'm running an Intel Xeon E5-2687W v4 with 64GB Ram on a workstation with Lightroom 6.7
System Model: HP Z840 Workstation
BIOS: Default System BIOS
Processor: Intel(R) Xeon(R) CPU E5-2687W v4 @ 3.00GHz (24 CPUs), ~3.0GHz
Memory: 65536MB RAM
Available OS Memory: 65452MB RAM
Page File: 6766MB used, 68413MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
I still cannot use more than 2 or three adjustment brush layer without Lightroom crawling. I've tried backing up my catalog, resetting LR to default, rebooting my machine, and working on another photo. At this point, is it safe to assume that LR users should completely avoid the adjustment brush and use another program? Seems counter productive.
Using the adjustment brush on a high end machine should not bring the machine to it's knees.
I disagree. If you do enough brushing, the slowdown will happen.
At this point, is it safe to assume that LR users should completely avoid the adjustment brush and use another program? Seems counter productive.
Again, I disagree. Those weren't the recommendations I gave. Please try those recommendations. Also, since you have Lightroom 6, turn off your GPU acceleration (go to Preferences, click on the Performance tab, then uncheck the box)