First up, the attached video via a smart phone or camera. Yell, it sucks. Hard to watch.
MS includes tools so that you can take a video capture. Use them
Second up, what can be noticed in the video. The Histogram, looks like just one color. That often denotes a corrupt preference files. Have you considered resetting the preferences file. A LrC preference file can get corrupted leading to all sorts of buggy behavior. Be mindful this could be considered a magic bullet, such as restarting MS Windows. Also be mindful that this will revert many if not all preferences to defaults.
Carefully read the following references.
It's recommended to backup your preferences before you reset the preferences to the default settings:
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