Version 5 contains 4 total version of the mod. Performance simply lowers some of the effects quality settings for a few extra fps, but does not disable anything.
The main choice to consider is the Depth of Field technique. Bokeh DOF is MUCH more realistic and also more expensive. I have compatibility issues with this effect on my PC, so an ENB DOF version is also included for compatibility.
Try Bokeh first!
IMPORTANT NOTICE : You must DISABLE AA (Anti-Aliasing) in the game for the effects to be visible
IMPORTANT NOTICE : The mod's features are not enabled by default.
This is due to the way that the menu system of the game is displayed. The menu will not show while the mod is active!
Press SHIFT+F9 to enable or disable the mod while in-game.
If you forget to turn it off before entering a menu, simply return to the game. If you cannot (end of mission screen for example) press the key combination then ALT-TAB out of the game, and back in. This will restore the menu.
IMPORTANT NOTICE : ENB wraps the 3D driver and intercepts data, Valve Anti Cheat will almost certainly see this as cheating. I would not advise using this online.