Lag in using brushes

[johnw7182060]

I've got a little lag when I am using an adjustment brush etc with Lightroom Classic CC. Have 16 GB RAM and a i7-4790 CPU @ 3.6 GHz quad core processor and a Radeon HD R9 270 graphics processor for a 4K monitor. Would moving to a SSD for main memory or increasing the RAM to 32GB be the most effective in eliminating lag? Or something else.

It isn't terrible but having it instantaneous would be preferred.

Thanks

[Todd Shaner]

In LR Preferences> Performance try setting 'Use Graphics Processor to Off.

[johnw7182060]

Thanks, I'll give that a try. I now see many have complained and this is a continuing problem in Photoshop and increasing my computer's ability won't overcome a problem in the app.

The main reason I got the high powereed graphics card was for PS and the 4K monitor. Now using LR far more than PS. Editing 45mp images. Turning it off just seems wrong on a gut level. Not saying you are wrong at all, just disappointing to turn off the card I bought to power the app.

[Todd Shaner]

If using a Windows desktop try updating the graphics driver to see if that improves performance.

https://www.amd.com/en/support/graphics/amd-radeon-r9-series/amd-radeon-r9-200-series/amd-radeon-r9-...