What version of Lightroom?
What operating system?
Did this just started happening?
If using Lightroom 6 or Lightroom CC, have you tried disabling GPU acceleration in the Lightroom preferences?
What is the version of Lightroom ?
What is the OS ?
What are your system specifications ?
Thanks to all for responding. I resolved all issues through a "chat". Updating LR resolved the issues. Again, thanks for taking the time to respond.