The #1 reason your display is misbehaving…your graphics drivers are old.
You will likely have an Intel, Nvidia, or AMD video card driver. (Or a hybrid Intel/Nvidia or Intel/AMD system in which case you’ll update both your Intel and your standalone card drivers)
You can check this by running the systeminfo command in rhino v6 or v7.
It will have the type of card you are running and the driver dates. If your driver is older than a few months, update!
AMD drivers here:
Nvidia drivers here:
Intel drivers here: