i have a Hp af008ax laptop with APU 2.2 GHz AMD Quad-Core A8-7410 APU with Radeon R5 Graphics 512mb and r5 m330 2gb graphics . as you are already aware of the issue with the switchable graphics card . And there are thousand of users those who have wasted their money in getting the game , as the game is not designed to work with the switchable card . Please do something so that the game can start using the 2gb card as the total memory that is being reflected inside the game is only 512mb .
I believe there is a fix for this, google search How to run GTA V on AMD Switchable Graphics