Hi, I do not know why this is happening but it's frustrating me.
The problem is that the OpenCL box is grayed out. Previously, if the box was ok, but when reinstalling the program, it did not let me check the box.
I have a GTX 1050ti graphics card and it's drivers are updated, so I do not know why the box can not be marked. My photoshop is in Spanish but you can easily deduce what is what, I hope you can help me.
What operating system are you using? If Windows 10, do you have the 1803 build installed?
Check Device Manager to see the date on the Display Adaptor driver, and see if there was an update that correlates to the Opne CL issue?
Try uninstalling and reinstalling the GPU driver.
Try rolling back the GPU driver. With my old system I used to install each NVIDIA driver update as they came out, which seemed like once a month or more. I was constantly running into issues like not being able to set Drawing Mode to Advanced. At that time, Perspective Warp would only work with Advanced mode set, so it was a pain. I don't play games, so I now don't update for the sake of it. What I am saying is that an earlier driver might fix your issue.
Try installing CC 2017 or earlier from the Previous Versions list, and see if they allow Open CL. Not a fix, but more information to work with.