Download the Nvidia GeForce 355.98 WHQL driver as released by NVIDIA.

This new GeForce Game Ready driver ensures you'll have the best possible gaming experience in Killing Floor 2. This driver is also aligned with the new flagship gaming GPU for notebooks, the GeForce GTX 980. In addition, this Game Ready driver also includes updated features and functionality for the GameWorks VR software development kit (SDK). 

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

Game Ready
Best gaming experience for Killing Floor 2

New GeForce GPU
Supports the new GeForce GTX 980 for notebooks, based upon the second-generation Maxwell architecture 

GameWorks VR Support
Updated driver support for GameWorks VR SDK, adding notebook support, VR SLI enhancements, and bug fixes.

Changes and Fixed Issues in Version 355.98
The following sections list the important changes and the most common issues resolved
in this version. This list is only a subset of the total number of changes made in this driver
version. The NVIDIA bug number is provided for reference.

Windows 10 Fixed Issues
***61557; [355.82] Memory clock reported as 0 MHz if P-state is P0. At times, same report with
P2 P-state. [200135032]
***61557; [353.62, GM204] Thunderbird mail client is choppy when G-Sync windowed mode is
enabled. [1673997]
***61557; [SLI, Stereo] Batman: Arkham Origins crashes when launched from task bar following
an Alt+Tab. [1673119]

Windows 8.1/Windows 8/Windows 7/Windows Vista Fixed Issues
***61557; [355.82] Memory clock reported as 0 MHz if P-state is P0. At times, same report with
P2 P-state. [200135032]
***61557; [Star Wars: Battlefront SLI Profile] Reflection envmaps flicker. [1676284]
***61557; [353.62, GM204] Thunderbird mail client is choppy when G-Sync windowed mode is
enabled. [1673997]
Release 355 Graphics Drivers for Windows, Version 355.98 RN-W35598-01v01 | 12
Open Issues in Version 355.98 WHQL
Open Issues in Version 355.98 WHQL
As with every released driver, version 355.98 WHQL of the Release 355 driver has open
issues and enhancement requests associated with it. This section includes lists of issues
that are either not fixed or not implemented in this version. Some problems listed may
not have been thoroughly investigated and, in fact, may not be NVIDIA issues. Others
may have workaround solutions.
For notebook computers, issues can be system-specific and may not be seen on your
particular notebook.
***61557; “Windows 10 Issues” on page 12
***61557; “Windows 8.1 Issues” on page 12
***61557; “Windows 8 Issues” on page 13
***61557; “Windows 7/Windows Vista Issues” on page 13

Windows 10 Issues
***61557; [VR Direct]: Tearing/corruption may occur when playing VR content while changing
display resolutions on the non-VR display, or after opening several VR applications in
succession.[1687875]
To work around, go to the Microsoft Component Services panel, then stop and then restart the
“Oculus VR Runtime service”.
***61557; [355.82, Surround, 2 × GTX Titan Black] Metro apps are throwing error
0xc00d11cd(80004005) when playing any video. [200135012]
***61557; [355.82, Multi-GPU] No content seen in Windows Media Player. [200134689]
***61557; [SLI, Batman: Arkham Knights] Severe stuttering seen, especially in indoor scenes,
when the game is running at 4K resolution and NVIDIA Gameworks settings are
turned on. [200116722]
***61557; [SLI, Batman: Arkham Knights] Random flickering occurs in the game if SLI is
enabled. [200116717]
***61557; [GM206, SLI, Batman: Arkham Knights] Stuttering occurs and performance drops
after shadow quality settings are toggled. [200116694]
***61557; [347.09, GM204] Blank screen observed on an ASUS Tiled display when system
resumes from shutdown or hibernation with Fast boot option enabled from BIOS.
[1591053]

Windows 8.1 Issues
***61557; [VR Direct]: Tearing/corruption may occur when playing VR content while changing
display resolutions on the non-VR display, or after opening several VR applications in
succession. [1687875]
Release 355 Graphics Drivers for Windows, Version 355.98 RN-W35598-01v01 | 13
Open Issues in Version 355.98 WHQL
To work around, go to the Microsoft Component Services panel, then stop and then restart the
“Oculus VR Runtime service”.
***61557; With a 3DTV connected and the resolution set to an HD3D resolution through the
NVIDIA Control Panel, the display flickers constantly after installing the driver via
INF over driver version 320.49. [1315116]
***61557; [3DVision] While a stereoscopic 3D video with stereoscopic 3D enabled is played, the
monitor refresh rate switches to 60 Hz after changing the resolution using the
Windows control panel. [1314811]

Windows 8 Issues
***61557; [VR Direct]: Tearing/corruption may occur when playing VR content while changing
display resolutions on the non-VR display, or after opening several VR applications in
succession. [1687875]
To work around, go to the Microsoft Component Services panel, then stop and then restart the
“Oculus VR Runtime service”.
***61557; [Optimus, Notebook] After installing the driver, the Device Manager includes an entry
for the NVIDIA Virtual Audio Device but the entry has a yellow bang.
The NVIDIA Virtual Audio Device is not needed nor used on Optimus notebooks, so there is no
effect on your notebook function. To remove the yellow bang, reboot your notebook.
***61557; With a 3DTV connected and the resolution set to an HD3D resolution through the
NVIDIA Control Panel, the display flickers constantly after installing the driver via
INF over driver version 320.49. [1315116]
***61557; [Video, Notebook, Hulu Desktop] When attempting to play videos using Hulu
Desktop, there is audio but no video. [1000017]
***61557; [Video, Notebook, Internet Explorer, YouTube] The NVIDIA Control Panel video
color settings have no effect on YouTube flash video playback within Internet Explorer
10. [999485]
***61557; [SLI, GeForce 500 series, DirectX 11, Dragon Age II] Shadows flicker in the cutscene
when SLI is enabled. [849235]

Windows 7/Windows Vista Issues
***61557; [VR Direct]: Tearing/corruption may occur when playing VR content while changing
display resolutions on the non-VR display, or after opening several VR applications in
succession. [1687875]
To work around, go to the Microsoft Component Services panel, then stop and then restart the
“Oculus VR Runtime service”.
***61557; [3DVision] While a stereoscopic 3D video with stereoscopic 3D enabled is played, the
monitor refresh rate switches to 60 Hz after changing the resolution using the
Windows control panel. [1314811]
Release 355 Graphics Drivers for Windows, Version 355.98 RN-W35598-01v01 | 14
Open Issues in Version 355.98 WHQL
***61557; [GeForce 500 series, Need for Speed: The Run] During the race the sun flickers and
there are bright blips and black patches. [909577]
***61557; [SLI, Company of Heroes: Tales of Valor] With SLI enabled, there is heavy flickering
in the game after switching from windowed mode to full-screen mode. [892264]
***61557; NVS 4200M, Optimus, F1 2011] The game hangs while selecting Quit To Main Menu
during gameplay. [879537]
***61557; [SLI, GeForce 500 series, DirectX 11, Dragon Age II] Shadows flicker in the cutscene
when SLI is enabled. [849235]
***61557; [GeForce 400 series, Total War: Shogun 2] The sun and surrounding area within the
game flicker. [807036]

 
Have you read our Liquid Cooled ASUS ROG Poseidon GeForce GTX 980 Ti review already ?