TIME FOR CHANGE, Adobe Lightroom was a mistake !
1 person found this helpful
We apologize for the inconvenience caused.Please update to the latest version of Lightroom 6.9
If that doesn't help, Follow the steps mentioned in Adobe Lightroom GPU Troubleshooting and FAQ and let us know if that helps.
It is a significant improvement in version 6.9
One other thing to do is to change your operating system. Windows 8.1 is the worst ever OS from Microsoft. (total disaster.
I have since Windows 10 64bit, I do not know why lightroom system info indicate otherwise, after the update 6.9 is Windows 10