Performance in Develop module gets sluggish and the screen blanks out. Most troublesome using the local adjustment brush. There's been a delay after I apply brush stroke and when I see the mask on the screen. Sometimes the mask is drawn in places that I didn't expect. I have the GPU setting at Auto. I have the latest nVidia driver. The performance is even worse if the GPU is off. The catalogue is on a Samsung 850 SSD drive.
I'll upgrade my system if I need to, but I don't want to waste the money if it isn't going to make a difference. I'm really not happy with the Lr Classic performance. Every time I use it it's a frustrating experience. Granted I don't have the latest and greatest hardware, but it's not that bad - not bad enough to warrant this level of performance.
I've read all the postings on how to improve Lr Classic performance and I think I've done everything I can do. If I need to make a hardware change, what should I change to get the most performance increase? Is there a software preference setting that I missed?