Thumbnails skipping around

[mikerHelix]

And as I try to do my photo selection, this is incredibly annoying. I'll be looking at a specific photo in Loupe view, when suddenly, the selection on the bottom thumbs flies five or six photos forward. If I try to fix it, often the thumbs will just start jerking back and forth. Sometimes it's like my mouse is hair-trigger, but sometimes it'll (at least seem to) move of its own accord. It's becoming increasingly impossible to do my work on this software. Any ideas?

Thanks in advance.

I'm using the iMac, 3.4 GHz Intel Core i5 - High Sierra v 10.13.5. with a standard bluetooth mac mouse.

[AxelMatt]

The first you should try is to deactivate the GPU support.

Adobe Lightroom GPU Troubleshooting and FAQ ​

Do you have installed the latest version of Lightroom?

[mikerHelix]

Hey Axel, thanks for the response. Much appreciated. I have the latest version, 7.3.1. Oddly enough, the GPU was already deactivated and I'm not sure why. The card appears to play with Lightroom fine. A quick test drive showed no skipping with the GPU reactivated, but the problem itself was fairly intermittent, so further testing is required. If the problem returns, I'll try reinstalling the graphics drivers.

If the further testing proves fruitful, I'll mark your response the "Correct Answer." In the meantime, thanks very much for your help!