Nvidia released  a new GeForce driver This is a DirectX optimized driver, well CPU overhead lowering driver so to say. So make no mistake and do not confuse it with the DX12 release versus low-level API access. Nvidia listed a bunch of games in the driver release, all CPU limited titles. The driver should help out SLI users though, where CPU limitation is a more common thing.

The hotfix driver fixes an issue faced with Dell's compact 4K Ultra HD monitors, specifically P3214Q and UP2414Q, in which the GeForce GPU would give out "half" or no display (Ultra HD resolution is handled over multiple TMDS links). It also fixes a Code 43 error message after installing driver 337.50 on a PC with Hyper-V enabled.

We have a discussion thread open on this driver right here. 

In Multi GPU mode the performance increases as such should be more substantial. Here's an overview of what you may expect tomorrow with the driver release:

What’s New in Version 337.61 Beta Hotfix

Resolved:

• Half display or no display on Dell UltraSharp UP3214Q/UP2414Q LCD monitor - [1453685]
• Code 43 error message after installing driver 337.50 on a PC with Hyper-V enabled - [1495541]

Known Issues:

• GFE 2.0: Users reporting GFE detecting wrong GPU as primary
• Need DX11 SLI profile for Smite
• Black textures around leaves in Just Cause 2
• Green corruption observed in 3D Mark (fixed in next driver)
• (NOT A BUG,nothing to fix) Shader Cache not enabled according to NVIDIA Inspector even though setting is enabled in NVIDIA Control Panel, other times crashes
• (NOT A BUG,nothing to fix) Batman: Arkham Origins displays purple smoke with driver update
• Record video through ShadowPlay in game game and then stop recording and return to desktop, GPU P-State will not return to lowest P-State during idle unless ShadowPlay is disabled
• Need DX11 SLI profile for Smite
• Need SLI profile for Titanfall (awaiting patch from developer)
• White screen flashing while moving in certain indoor areas playing Deus Ex: Human Revolution Directors Cut V2.0

What’s New in Version 337.50

Performance 
Introduces key DirectX optimizations which result in reduced game-loading times and significant performance increases across a wide variety of games. Results will vary depending on your GPU and system configuration. Here are some examples of measured gains versus the previous 335.23 WHQL driver:

GeForce GTX 700 Series (Single GPU):

• Up to 64% in Total War: Rome II
• Up to 25% in The Elder Scrolls V: Skyrim
• Up to 23% in Sleeping Dogs
• Up to 21% in Star Swarm
• Up to 15% in Batman: Arkham Origins
• Up to 10% in Metro: Last Light
• Up to 8% in Hitman Absolution
• Up to 7% in Sniper Elite V2
• Up to 6% in Tomb Raider
• Up to 6% in F1 2013

GeForce GTX 700 Series (SLI):

• Up to 71% in Total War: Rome II
• Up to 53% in Sniper Elite V2
• Up to 45% in Aliens vs. Predator
• Up to 31% in Sleeping Dogs
• Up to 20% in CoD: Black Ops 2
• Up to 10% in Hitman Absolution
• Up to 9% in F1 2013
• Up to 7% in Far Cry 3
• Up to 6% in Metro: Last Light
• Up to 6% in Batman: Arkham Origins

SLI Technology:

• Total War: Rome II – added profile
• War Thunder – added profile
• Watch Dogs – updated profile
• Diablo III – updated profile

3D Vision
Supports new “3D Compatibility Mode” for 3D Vision that enables us to improve the 3D experience for many key DirectX 10 and 11 games

3D Vision Profiles

• Path of Exile – rated “Good”
• KickBeat – rating now “Excellent”

3D Compatibility Mode Profiles

• Assassin’s Creed Liberation – previously “Not Recommended”, now rated as “Excellent”
• Sniper Elite: Nazi Zombie Army – previously “Good”, now rated as “Excellent”
• Sniper Elite: Nazi Zombie Army 2 – previously “Good”, now rated as “Excellent
• Strike Suit Zero – previously “Not Recommended”, now rated as “Good”
• Watchdogs – rated as “Good”

Additional Details:
Installs new PhysX System Software 
Installs HD Audio 
Installs GeForce Experience 

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