The issue sounds like a hardware issue from what you describe. Have you contacted Lenovo technical support? You may want to provide them with a video of the issue to help with the investigation
As Robert_U mentioned, this could be a hardware issue but from our side you can try the latest driver we have available for your graphics controller.
Here it can be downloaded:
If you have problems during the installation of the driver, try the steps mentioned here:
If issue persists, I think it would be a good idea to contact Lenovo for them to take a look into the hardware.