please try the following
delete your gamerprofile .xml file , the game will make a new one on its own the next time ya launch it
you can find that file in documents \ my games \ far cry 4 \ a sub folder with a series of letters and numbers .. this will vary from system to system as thats tour Uplay ID \ gamerprofile
that file holds all of your in game settings
next VERIFY your game files
To verify your files if you bought the game thru Steam ..\EXIT Steam ..right click your steam icon ..select run as Administrator
to launch Steam
then go to your Steam games library
right clik on far cry 4
select properties
select local files
select verify Integrity of game cache
it takes a few min to do but its faster the redownloading your entire game , if its only a few files that were corrupt or installed incorrectly .... this in many cases will fix your problems
If you have the U play only Version of the game you can also verify your game files with U play
if you have the game via u play only here are instructions how to verify your game files thru their client
Again its probably best to make sure you launch Uplay as RUN as Administrator when you do a file verify
https://support.ubi.com/en-US/FAQ/60...0000000ee85CAA
see the bottom of the page
If you continue to have issues PLEASE
open a support ticket or contact Ubi support for your region
you can find phone number\ support options \ and support hours information @
https://support.ubi.com/en-GB/Contact#en-gb