Nvidia GeForce 320.14Beta Drivers Released, Offer 10% Performance Boost In Metro: Last Light

Nvidia has released a new set of beta drivers for its graphics cards. According to the green team, this is the optimal driver for Metro: Last Light, and comes with a 10% performance boost. Apart from that, this driver features the same fixes and improvements found in the previous beta driver.
Those interested can download these new drivers from here.
And here is the complete changelog:
Release Summary
-This is the GeForce Game Ready driver for Metro: Last Light providing up to 10% faster performance.
Get optimal game settings for Metro: Last Light with GeForce Experience and enjoy NVIDIA PhysX effects and DirectX 11 tessellation.
New in GeForce R320 Drivers
Performance Boost – Increases performance by up to 20% for GeForce 400/500/600 series GPUs in several PC games vs. GeForce 314.22 WHQL-certified drivers.
Results will vary depending on your GPU and system configuration. Here is one example of measured gains:
GeForce GTX 660:
-Up to 20% in Dirt: Showdown
-Up to 18% in Tomb Raider
-Up to 10% in Metro: Last Light
-Up to 8% in StarCraft II
-Up to 6% in Sniper Elite V2
-Up to 6% in Metro 2033
-Up to 6% in Far Cry 3
-Up to 6% in Deus Ex: Human Revolution
-Up to 5% in F1 2012
GeForce GTX 660 SLI:
-Up to 17% in Dirt: Showdown
-Up to 18% in Tomb Raider
-Up to 9% in Metro: Last Light
-Up to 9% in Assassin’s Creed III
-Up to 7% in StarCraft II
-Up to 6% in Far Cry 3
-Up to 6% in Deus Ex: Human Revolution
-Up to 6% in Battlefield 3
-Up to 5% in BioShock: Infinite
-Up to 5% in F1 2012
SLI Technology
-Added SLI profile for Alien Fear
-Added SLI profile for Call of Juarez: Gunslinger
-Added SLI profile for Dead Island: Riptide
-Added SLI profile for Dragon Sword
-Added SLI profile for Neverwinter
-Added SLI profile for Far Cry 3: Blood Dragon
-Added SLI profile for GRID 2
-Added SLI profile for Human Head 2
-Added SLI profile for Remember Me
-Added SLI profile for The Walking Dead: Survival Instinct
-Updated SLI profile for Natural Selection 2
-Updated SLI profile for Resident Evil 6
-Updated SLI profile for Trackmania 2: Canyon
Additional Details
-Installs PhysX System Software 9.12.1031.
-Installs HD Audio v1.3.24.2