If no mods are installed, I would recommend clean installing your gpu drivers as suggested on the official support website:
Welcome to CD PROJEKT RED Technical Support! Here you will find help regarding our games and services, as well as answers to frequently asked questions.
support.cdprojektred.com
(also try step 2. and 3. as suggested in this article - if nothing helps, you can reach out to support by clicking on "contact us")
However, if you use mods or had mods in the past, it could be necessarily to clean install the game as suggested in this article:
Welcome to CD PROJEKT RED Technical Support! Here you will find help regarding our games and services, as well as answers to frequently asked questions.
support.cdprojektred.com