I should note that I haven't tested 16.8.2 yet.
Frrame Rate Target Control if that is what you mean isn't usable in DX12 currently, it is for DX9 - DX11.
I am not seeing any issue with SSAA 2x in DX12, you would need to provide full game settings including resolution, what level you are on and preferably screenshots showing the issue.
It happens on the in game menu and the benchmark. I never tried in-game. It happened for the first time after the benchmark and wasn't in the in-game menu until after it showed up in the benchmark. Other times I've recreated it it happened with both ssaa and ssaa2, but today it only happened with ssaa2. SSAA2 corruption Rise of the Tomb Raider RX 480 1080p - Album on Imgur I don't do social media so I hope imagur is ok for a host and for your terms of service. I just picked the first free one I had heard of. I hope it works.
Edit: The checker pattern in the lower left is persistent throughout the benchmark too.
Resolution: 1080p 60hz tv display. (It might be 59.9)
Graphics settings: Very High preset.
Texture Quality: Very High
Anisotropic filter: 16x
Shadow Quality: High
Sun Soft Shadows: High
Ambient Occlusion: HBAO+
Depth of Field: Very High
Level of Detail: Very High
Screen Space Reflections: On
Specular Reflection Quality: Normal
Dynamic Foliage: High
Brightness: Didn't change this
DirectX 12: on
Exclusive Fullscreen On
Monitor: 1 (Radeon (tm) rx 480 Graphis(1))
Resolution: 1920 X 1080
Resolution Modifier (grayed out)
Refresh Rate 60Hz.
ANTI-ALIASING: SSAA 2x
Stereoscopic 3d: off
Global Graphics settings are currently set to defaults. Use application settings or AMD optimized for everything. Power efficiency and compatibility mode are off. Frame Rate Limiter is also off.
On the Frame Rate Limiter. That's odd because the setting works in DX12 by itself for me with no issues. It just doesn't prevent tearing and doesn't work the vsync so is kinda worthless at the moment.
Here's a screenshot from my system with SSAA forced through wattman onto Fallout4. Works fine. All other games seem to work fine except an odd glitch in the menu of Just Cause 3.
Here's Fallout4 again but with 8x AA SSAA set in Global Graphics
Here's Batman Arkham Knight with 8x SAA enabled. No issues.
I included the error free screen shots because the nature of the corruption looked like a video mem issue to me, but I can do SSAA in all other games without a problem. I can also run VSR without a problem even in Shadow of Mordor ultra textures. So I don't think it's a video memory issue as in a IC failure. Forcing SSAA in Global Graphics doesn't work for Rise Of the Tomb Raider. It causes a lockup must be another dx12 thing that doesn't work yet.
The only other directX 12 game I have is Forza 6 apex. It plays fine with everything set to high and MSAA 8x turned on. It doesn't seem to have an option for SSAA. I didn't try it with VSR turned on.
edit: VSR with 8xmsaa works fine in forza. No SSAA option though.
i have the same issue if you turn HBAO+ off if fixes the problem for me but loose HBAO+ lighting effects
I just tested it. Switching the ambient occlusion setting from HBAO+ to On takes care of the problem for me as well. Odd HBAO+ works with FXAA just fine. The shimmering checkers goes away. Maybe I'll have to load another game with HBAO+ and ssaa options for testing.
edit: I still get some flashing and shimmering in the benchmark but not the obvious corruption. So turning ambient occlusion to On from HBAO+ fixes maybe 80% of the problem but not all.
when i run the game in DX12 mode it uses lot more VRAM than it does in DX11
As I said I'm fine in Shadow of Mordor even running VSR to 4k with 8xmsaa. SOM uses most of the 8GB vmem there. But yeah, there could be something janky going on with our cards if everyone else is fine. I'm installing Farcry 4 right now. I'll force ssaa through global graphics and turn on hbao+. I'll see if there is any corruption there.
I checked witcher3 with hbao+ and SSAA forced through Global Graphics in Radeon Settings. Worked fine. As you said, dx12 uses more vmem for you in this game. HBAO+ with SSAA2 in DX11 in Rise of the Tomb Raider works fine for me too. So I guess right now it's just that one combination that doesn't work. I don't have another dx12 game to try. Time Spy, Forza apex 6 and Elemental demo dx12 are the only other dx12 things I've tried. They all work fine.
Edit: The more I look at it. It just looks like bad video memory. I don't understand why I don't have problems elsewhere. Imgur: The most awesome images on the Internet
edit2: here's without the obvious corruption. It still doesn't look quite right. dx12 fxaa hbao+ 1080p Imgur: The most awesome images on the Internet
when i played rise of the tomb raider in dx11 mode with ssaa2 or 4 with hbao+ it works fine no corruption