*Open your witcher 3 installation folder
*Delete the bin folder
*then open the dlc folder and delete the bob folder
*then delete the files in main installation folder by selecting from launcher-configuration.json to
zlib1.dll
*re verify the files and wait for the files to be redownloaded again
*start the game with dx11/12 whatever you prefer
*enjoy the game
*and for those people who are getting script or function or any kind of error message
for example -
"Error [content0]game\player\playerwitcher.ws(1128): Could not find function 'GetHorseMode'

Warning [content0]engine\environment.ws(30): Global native function 'EnableDebugOverlayFilter'
was not exported from C++ code.
Warning [content0]engine\environment.ws(32): Global native function 'EnableDebugPostProcess'
was not exported from C++ code.
Warning [content0]engine\showflags.ws(11): Global native function 'DebugSetEShowFlag' was not
exported from C++ code.

*delete the folder that is giving the error , like if its from content0 then delete the folder entirely and *then re verify and let it redownload the game file
*and please do not verify while you have mods installed , it messes with the verification of the files so
please keep that in mind while verifying.
thank you for reading through all, i hope it helps who were having problems
I'll try to help out anyway i can