In GTA VCS when you go to a vehicle, the accelerate and the reverse controls is different which is pretty irritating, this thing also applies to the PPSSPP emulator too, same thing as the Console version of the GTA Games. The answer, which pisses me off since this was actually possible at PPSSPP so how is it impossible? also yes PS2 Controller Remapper is possible meaning mouse aiming fix is possible thorugh this emulator.
When you try aim in GTA VCS, you have to press the WASD to move and not the MOUSE, so i did some search on Google and only found this result So, i decided to move on to the GTA VCS PS2 emulating on PCSX2 because it's more detailed than the PSP one.