I am experiencing issues as well.
When I run the game vanilla or with mods, the first mission in the first campaign, the chopper wont lift off after you get in the truck to get past the checkpoint and will not update your tasks, I have tried multiple times.
Also, With CBA, my game stops responding at loading screens forcing me to kill the program in task manager.
Any one with the same issues that could reply or someone with help, I would be very greatful
EDIT: Oh and there are flickering grass and trees with NVGs on at night at random times. along with buggy textures on buildings/towns during the day (only happened once though)