I have just updated from Cubase 9.5 to Cubase 13 and had to downgrade to 12 because of an extreme flickering of the user interface with an MSI Raider GE 66 12U.
It have an Nvidia GeFroce 3080Ti, Core i7 and 32Gb of RAM.
The flickering produces most of the time you try to select a menu a ghost floating image for a split second and many times you click on the wrong menu entry.
Witn Cubase 12 the UI works as expected.