what's interesting is after installed the 12900KS, I'm generally GPU Limited with the Strix 3090 - Ultra settings 3440x1440 QD-OLED...

24 minutes ago, craigeaglefire said:

3440x1440 QD-OLED...

Is that the Alienware? If so, how are you liking it?

I've done a lot of testing today using MSI Afterburner. I really recommend this with RTSS for the overlay. Afterburner comes with a benchmark that will give you average, max and 1% low fps for the duration of the benchmark. Very useful! Normally I have all fps counters turned off, but when I'm tuning the graphics settings I find them very useful. 

I did some flying in Norway, using the excellent DEM10 mesh, and the DEM7 mesh in Lofoten. I was running in TAA with a render scaling of 105-110 and was struggling with low fps. This was even with a terrain LOD of 100. 

Climbing out of ENBO Bodo in low cloud coverage I only got 32fps, being severely GPU limited. As you can see from the screenshot below the main thread was very low at 13.8ms but the GPU render time was as high as 29.5ms. 

I figured this would be a situation where DLSS might help. Turned it on - and:

FPS went up from 32 to 47! Thats an increase of 47%. With TAA with an increased render scaling the sim was rendered in 4032x2268. With DLSS (quality mode) the sim was rendered in 1440p and upscaled to 4K. The difference in performance was substantial, without a significant degradation in image quality. Granted, I was in the analog Caravan. If I had chosen an aircraft with a G1000 cockpit, I would have been distracted by the blurring of the speedtape. 

Another thing to note from this screenshot is that the CPU with DX12 was really getting a workout, running at 115%, meaning that the turbo boost kicked in. With DLSS, the GPU however went from 99% to 77%. Quite impressive I think. 

With the added headroom that DLSS gave me, I could increase the terrain LOD, thus having an increased draw distance for those majestic mountains. 

Here's another screenshot where the Caravan was holding at 6000ft south of Lofoten. Notice the RAM and VRAM usage! That 7m mesh is really taxing my rig to its limits!

EDIT: Not sure why MSI Afterburner and the dev mode overlay reports wildy different RAM and VRAM usage. Does anyone know?

Edited September 25, 20223 yr by Cpt_Piett

Are there any guidelines/rules of thumb for when the DX shadercache should be cleared out?

Edited September 25, 20223 yr by odourboy

2 hours ago, odourboy said:

Are there any guidelines/rules of thumb for when the DX shadercache should be cleared out?

I clear mine anytime I shift to a different DX version.  If I switch from DX11 to DX12 and vice versa, I clear it.

Is the use of DX12 recommended more on AMD/Nvidia or is there no difference at all related to the manufacturer? 

4 hours ago, scotchegg said:

Is that the Alienware? If so, how are you liking it?

a game changer monitor,

better than expected, 3 months now,

the big plus is that it is a proper monitor with all physical adjustments,

it does run a pixel refresh routine every 4 hours - but that can be overridden until next opportunity,

stunning MFS graphics in 34” subtly curved package 🙂
 

& flawless GSync Ultimate

Edited September 25, 20223 yr by craigeaglefire
GSync…

14 hours ago, Cpt_Piett said:

From the top:

• Current fps is 25
• You're in SDR and using Vsync
• You've set the sim resolution to 4K @ 3840x2160 but rendering at a lower resolution of 2304x1296. Seems you have reduced render scaling in the settings?
• You are currently "Limited by GPU" and you're using DX11 ("PC D3D11")
• Main thread frame time is 22.2ms - the time it takes for the mainthread to render a single frame
• GPU frame time is longer at 26.9ms i.e. at the moment you were GPU limited
• There is a lot of variation in the GPU frame time - min 23.8 and max 51.4 with a median of 38.9ms which is quite long

In other words, at your current settings, it seems your GPU is struggling to keep up with your CPU. 

For people with older GPUs and newer CPUs that often are GPU-limited, DX12 will probably not bring huge advantages. Although DX12 in general leads to better utilization of the CPU, this will not help if the GPU is the limiting factor. 

DLSS is available from RTX cards and upwards i.e. from the 2000-series. DX12 will work regardless of GPU (others please correct me if I'm wrong). 

Which system did you buy?

Thanks,  its quite smooth though. Not sure about the SDR. My tv is in HDR mode. Anything i need to do in MSFS for HDR? any benefits?

Yes render scale is 60% all ultra except clouds at high and TLOD at 200/200 in cruise. FPS dropped to 18 over Seattle at FL370.

CPU is 4770K/4,5

Michael Moe 

21 hours ago, Wanthuyr Filho said:

I don't know if this is really the case, but DX12 for me (3080 Ti) causes the airport pavement textures to fail and not draw (patches of it).

I'm seeing this also with a 3090 on the new studio drivers.

Back on DX11 for now

I really like the DX12 ( icw Gefirce Experience filters )

Whilst my overall experience of DX12 with the new studio driver has been fairly positive, I haven't really seen any significant gains performance wise.  I have noticed a lot of texture flashing in freeware photosceneries though which is worse in DLSS than TAA, though not great either way.

Whilst the main benefits have apparently been DX12 related and is no doubt the way forward, has anyone noticed any improvements still running DX11 (I've not tried DX11 since the update).

Edited September 25, 20223 yr by cianpars

7 hours ago, Cpt_Piett said:

Granted, I was in the analog Caravan. If I had chosen an aircraft with a G1000 cockpit, I would have been distracted by the blurring of the speedtape. 

DLSS is great for analog steam gauges. The biggest challenge with DLSS 3.0 for Asobo will be: can they exclude specific areas of the screen (glass panels) from getting DLSSed or render these instruments separately and then overlay them ontop of the underlying DLSSed cockpit, otherwise the only advantage would be some 30% fps increase through higher clock frequencies and more shaders, but never 2 x performance. I bet Asobo will try hard. but no matter what - fantastic times ahead for all GA pilots or analog steam gauge- , VR and home cockpit users as long as they don't normally fly to places like EGGL with AI traffic. Glass cockpits may have to put up with some 30% fps increase without DLSS 3.0 on their new RTX 4000.

Edited September 25, 20223 yr by turbomax

3 hours ago, Michael Moe said:

Anything i need to do in MSFS for HDR?

Make sure HDR is on in Windows settings. It's under display settings. 

26 minutes ago, Cpt_Piett said:

Make sure HDR is on in Windows settings. It's under display settings. 

I read on the PMDG737 MSFS forum there is a bug. The workaround should be to have windowed mode on and then move the screen a bit and then switch to full screen.

Thanks Michael Moe 

2 minutes ago, Michael Moe said:

I read on the PMDG737 MSFS forum there is a bug. The workaround should be to have windowed mode on and then move the screen a bit and then switch to full screen.

Thanks Michael Moe 

Oh yeah, forgot about that one. I have to do this every time I start the sim, otherwise I'll get SDR. 

This is one of the things they didn't fix in the for the release. It was discussed at great lengths in the official beta forums.