One of the biggest letdowns of GTA 5 was that it ditched the Euphoria Engine physics. Other Rockstar Games titles like Red Dead Redemption (RDR), Max Payne 3 and Grand Theft Auto 4 have proven to include better ragdoll physics than GTA 5.
If you want GTA V but more, then you'll love GTA V Redux. The mod adds new weather, redesigned shaders, all-new textures that you'll need a monster graphics card to load, brand new debris systems, updated handling, new AI capabilities for the cops, improved weapons range, increased map population, new ragdoll physics, and improved player motion.