Good afternoon everybody,
I'm adding an additional item if it's helpful.
I saw on other forum that game's save files could lead to this kind of bug in GTA5.
So, I deleted the game's save files and restarted the game with the quadstick connected to the PlayStation via the FGC2.
Then the brightness calibration screen of the game appears.
Since I didn't configure the D-pads with the quadstick, I have to use the Microsoft Adaptive Controller instead.
Then, the story mode reaches 90% again but remains stuck (with the Xbox Adaptive Controller connected via the FGC2).
I then have to reconnect the quadstick via the FGC2, and this time the story mode ends!
However, the problem reoccurs with the quadstick connected via the FGC2 if I quit and restart the game (story mode is again stuck at 90%). I thought the game's save files could store information about the controllers/joysticks used, which could be a problem, but now I doubt it.
On the internet, players seem to be having a fairly common problem with this game getting stuck at 90% of the loading time of the story mode...
So I don't really know what the cause is (and if it is related to the quadtcik/FGC2).
If anyone experiences this problem and finds a solution, I'd love to hear it.
Best regards,
Christophe