Pink horizontal lines showing on random images!

[Dayna30078266lq58]

I've edited in the past year with lightroom classic on my HP, but ever since I've switched to my new iMac, I will randomly get these random pink lines everywhere on random images. It usually happens on the best images so I'm hoping I can figure this out asap. Please let me know if you've seen this, or if there is something I can do to get rid of this problem. Thanks in advance. See the image below. 

[Manan Joshi]

Moved the post to more appropriate Lightroom Classic forum

-Manan

[dj_paige]

Defective GPU driver or corrupted file. First turn off the GPU in LrC (Preferences->Performance->Use grpahics processor set to OFF) and see if that fixes the problem. If it does not fix the problem, then the file is corrupted.

[deaner1971]

I am getting a similar issue.

Sometimes when I convert to a .tiff to edit in Neo and sometimes just opening a RAW file.

Sometimes on the first time I open a picture and sometimes when I have been using it for a while.

Any ideas on cause?

[dj_paige]

Any ideas on cause?

By @deaner1971

Please read my comment immediately above your message.

[deaner1971]

I was not sure that this was the exact same issue, as my line is a single one and contains a portion of the image within it. His seems to populate the entire screen and there were numerous ones. I disabled it and will wait and see if the issue repeats. Thank you.

[dj_paige]

I was not sure that this was the exact same issue, as my line is a single one and contains a portion of the image within it. His seems to populate the entire screen and there were numerous ones. I disabled it and will wait and see if the issue repeats. Thank you.

By @deaner1971

If its not the same problem, just a "similar" problem, it belongs in its own thread. The solution given above may or may not apply here, and so the discussion should be separate. If the problem returns, start a new thread and SHOW US a screen capture of the problem.

[Keith Reeder]

Hardware issue, as DJ has already explained.