I have the following hardware:

• Core i7 6700K
• 64 GB DDR4
• GTX 1080 Founders Edition
• Samsung 850 Pro
• Acer Predator X34 3440x1440 Ultra Wide monitor (~5 Megapixels, or 5/8ths the number of pixels as 4K) - default refresh rate of 60 Hz, overclockable to 100 Hz, but in most of my testing here I've left it at the default 60 Hz to rule out any "overclocking" related problems. I did test it on 100 Hz, but it wasn't better.
• Gigabyte Z170M motherboard
• CPU and GPU are at stock clocks

Software:

• Windows 10, latest stable build (not Insider Preview)
• Nvidia driver 368.39
• Latest BIOS for motherboard
• Latest patch for AotS as of 6/11

I have the following problem: In certain scenes, I experience flickering. This manifests as individual frames that seem to be rendered as 100% black. What I'll see is, once the flickering starts, every couple of frames will start to be rendered as black for a couple seconds. Then it'll stop and work fine. Then a while later the flickering will come back.

However, not all DirectX versions and settings are created equal.

Scenario 1: DX12, VSync Off

This is with the following config:

• All graphical settings on the "Extreme" profile.
• 3440x1440 resolution.
• V-Sync disabled, G-Sync enabled.
• 60 Hz maximum refresh rate (configured on monitor OSD).
• Fullscreen (not borderless window).
• DX12.

Scenario 1 Result: Severe flickering on what seems to be lighter loads. Like when it zooms in on a small group of aircraft during the benchmark? Pretty terrible flickering. During the huge battles involving the dreadnoughts and dozens of frigates, it's fine.

Scenario 2: DX11, VSync Off

This is with the following config:

• All graphical settings on the "Extreme" profile.
• 3440x1440 resolution.
• V-Sync disabled, G-Sync enabled.
• • 60 Hz maximum refresh rate (configured on monitor OSD).
• Fullscreen (not borderless window).
• DX11.

 Scenario 2 Result: No flickering at all. None. Ever. Period. However, framerates are MUCH worse during intense/large battles compared to DX12.

 Scenario 3: DX12, VSync On

This is with the following config:

• All graphical settings on the "Extreme" profile.
• 3440x1440 resolution.
• V-Sync enabled, G-Sync enabled.
• • 60 Hz maximum refresh rate (configured on monitor OSD).
• Fullscreen (not borderless window).
• DX12.

Scenario 3 Result: Very minimal flickering. Through the entire benchmark I only saw the screen flicker to black twice, and when it did flicker it was only for one or two frames. 

Scenario 4: DX12, VSync Off, 100 Hz max refresh rate

This is with the following config:

• All graphical settings on the "Extreme" profile.
• 3440x1440 resolution.
• V-Sync disabled, G-Sync enabled.
• 100 Hz maximum refresh rate (configured on monitor OSD).
• Fullscreen (not borderless window).
• DX12.

Scenario 4 Result: Severe flickering on what seems to be lighter loads. Same as Scenario 1 with the 60 Hz, except that sometimes the camera panning looks a lot smoother than on 60 Hz.

Detailed Benchmark Results Files

Since Scenario 4 is exactly the same as the first one, I am only uploading benchmark results for the first three scenarios with my monitor NOT overclocked (60 Hz, factory default). Therefore I strongly suspect the problem is not related to >60 Hz.

Here are the benchmark results, 7-zipped, for the first three scenarios: https://drive.google.com/open?id=0B7gkrXPjBdybVlVnRXdQM1JZTVE 

Is this a software issue with the engine or do you suspect hardware? If you suspect hardware, WHY do you suspect hardware, when I already know I can drive native 90 and even 100 FPS with this monitor by using http://www.testufo.com/ ? Please justify any assertions you make.

Here are my testufo results: