Please follow the below steps to disable the display adapter.
> Launch Lightroom
> Click on Lightroom > Preferences
> Click on Performance Tab
> Uncheck the option Use Display processor
> Quit Lightroom and restart your machine
> Launch Lightroom and check for the issue.
Let me know if this helps.
Many thanks for your reply.
The only successful workaround was to replace Adobe Lightroom CC 2015.3 for Adobe Lightroom 6.