Go to Edit > Preferences > Performance, and uncheck Use graphics processor.
in back of my mind i thought thats wat was going on
looks simlar to some old video game glitches txs
This issue seems to be caused by the display adaptor.
Please follow the steps and see if this helps.
> Launch Lightroom
> Click on Edit > Preferences
> Click on the Performance Tab
> Uncheck Use Display Adaptor
> Click on Ok
> Quit and relaunch Lightroom to check for the issue.
Let me know if this helps.