Adobe Camera Raw CC 10.4 and DNG Converter 10.4 now available

For several weeks now, when I move the sliders in Camera Raw, at certain points the image will separate  into squares as shown in this pic.  If I move the slider more, or if I click somewhere on the image, it will return to normal, but then it will happen more if I move sliders again.  I have the latest updates & the only difference with my system is that I recently updated my GeForce 940M graphics driver to the latest version.

Hello! You could try disabling your GPU in the ACR preferences to see if the issue goes away, at least to further isolate the source of the problem. Details are here:  https://helpx.adobe.com/photoshop/kb/acr-gpu-faq.html

We've seen similar things in the past:  https://helpx.adobe.com/lightroom/kb/rollback-driver-nvidia-issue.html

Let us know how it goes.