Several people have had similar issues. Most have been traced to an nVidia video driver problem. Do you have an nVidia graphics card?
If you do, I'd go and download the very latest driver for that card, and install that.
Also, Hardware Acceleration can have an impact, as can OpenGL.
Thank You so much. Updated drivers solved my problem. Happy Holidays.
Updated drivers solved my problem.
Great news. I love the "easy" fixes, and thanks for reporting.
Happy Holidays and happy editing to you, as well,