Ahh GTA V...
Lower MSAA to FXAA.
Anisotropic filtering to 4x.
Your CPU is bottlenecking a bit for sending draw request to GPU, esp. in CPU instensive games like GTA V.
But if you want to play at these settings and you are getting 50-65 fps now, I suggest you Overclock your FX 8370. FX 8370 is good for OC.
ONLY PROCEED IF YOU HAVE AN AFTERMARKET AIR TOWER OR WATER COOLER. (or Wraith Cooler)
Try these settings
1.45V
200.00MHz Base clock
23x CPU multiplier, 4.60 GHz
A very generous voltage have been given that is not too extreme for guaranteed stability. (FX 8370 is well binned)
Then this 15% overclock from 4.00 GHz to 4.60 GHz will net you around <15% performance, giving you a 60fps base minimum just right.