The best behaviour, I think, would be the dismemberment behaviour but without the dismemberment. It's very underutilized in the vanilla game. Speaking of which, the "drunk" ragdoll behaviour might look great for NPCs who have been shot many times. Might be worth testing that out if the has...
Best TAA and Visual Effects is intended primarily for players who play the game with an upscale of 1.5, 1.75 or higher (in the game settings) Also works great using DSR and DLDSR technologies. Or use real 2k/4k monitors! Big update v.1.6.0 Changes below: