HI, thi si not the case here. This is my 2. PC, for music prod. I edit the film with 2x Nvidia 2080 Ti, ok, and also the PC some times shut down, or did ! Problem here was theat they ran too hot ! So I got a prgramfrom a gamer site, that can tweak the power fo the GPUs, and… the PC stopped to freeze 
I will tell you somtihng trange here, first !
Yesterday, in my frustration, and desperation, after also installing NVIdia, driver without any other exptras, and with the Driver completely uninstalled, I tried to open the movie in CUBASE 10,5 . AND IT WORKS !?!?
Remember this, I run dual screen ( obviously ) ass serious prod. guys do ! The fancy time of 17Inch Mac ( I anever understood it ) !?!
And another information is ; the CUBASE project , with the movei also run, if I turn OFF the Nvidia driver, but then ; No dual screen is possible . I have one HDMI and one VIDEO cable, I did not try , f.eks 2 HDMI . BUt, if I were able to run the other screen, its ok, I dont need the Nvidia driver for this computer, as it is dedicated to CUBASE. The other card I took out, is a 1070 RTX .
SO, its my conclusion, that when this works in C 10,5, but not in C 11, then its a Steinberg problem. I aslo had some strange behaviour of the SUperior Drummer 3, in Cubase 11, but works in 10,5. I also at last concludede with som dualscreen problems that occured in version 11 .