downloaded gta 5 and I thought I would have a lower fps because of my specs, but it happens that I lose textures, the graphics work sometimes at 70 percent and I lose the textures, I don't understand how to fix it because I don't understand what it is

my specifications are

4gb rama

Intel duo e8400

Amd radeon r7 430 gddr 5

if someone can try to fix it, it would mean a lot to me, thanks I will take a picture if necessary.