15 minutes ago, cianpars said:

From around 20 on the ground and 30 in the air in DX11 up to 40 on the ground and 60 in the air in DX12, Andy.  It's a bit of a puzzle to say the least as nobody else seems to be getting such an FPS jump in DX12 (or an FPS halving in DX11 if you want to look at it that way).

So I seem to have a choice of a smooth 20 FPS (DX11) or a stutterfest of 40 FPS (DX12).

If anyone else's system was displaying such an anomaly, I probably wouldn't question it, but I am currently at a bit of a loss to work out what is going on.

Smooth beats stutters any day. 

I had been using DX12 with no issues , but the Kodiak does not like DX12 ; so back to DX11 for now .

I have crazy stutters too, they start after a few minutes and then get so bad I often can't land.  I have one other application which makes heavy use of the system which does the same thing.  My comouter is a good several years old, so I've decided to get a new one, hopefully that will help!

1 hour ago, Bobsk8 said:

Smooth beats stutters any day. 

Yeah, I would normally agree with you Bob, but 20 FPS with a 5600X and an RTX3700 should be giving me a lot better than that I would think.  At 1080 in DX11 I had bags of headroom for running heavy photogramic scenery but I'm down to single figures now.

I expected to lose a little rendering at 1440, but not that much.

I was running DX12 even with the FPS loss because I like the colors better.  Everything doesn't appear washed out like in DX11.  Seems like the gamma issue is finally fixed.  I switched back to DX11 only because the Kodiak is currently one of my favorite planes and it does not currently like DX12.

8 hours ago, cianpars said:

From around 20 on the ground and 30 in the air in DX11 up to 40 on the ground and 60 in the air in DX12, Andy.

I am not sure what you're seeing exactly but it seems you're the only one...

DX12 is affected by much more stuttering than DX11, without any advantage on framerate or graphics quality. Most probably some other setting (refresh, NCPI vsync, internal vsync, framerate limiter) is limiting your performance in DX11 mode.

20 fps on the ground is not a normal framerate with a 5600X, which should be faster than my 10850K, and I have 30-35 fps on the ground at large airports with the A32NX.

2 hours ago, Viper714 said:

I was running DX12 even with the FPS loss because I like the colors better.  Everything doesn't appear washed out like in DX11.  Seems like the gamma issue is finally fixed.  I switched back to DX11 only because the Kodiak is currently one of my favorite planes and it does not currently like DX12.

You can adjust the colors with GeForce Experience (ALT+F3) in DX11 as you like, without affecting performance.

I am in DX12 since I migrated to Win 11, and I am really satisfied overall with it.

It was also positive when I installed Prepar3d v5 latest release to test it in Win 11.

In my case I do see better performance with DX12 than I did with DX11. I am aware that some add-ons might e incompatible, but sice I have just a few, very few, so far so excellent !

I just wish IL-2 migrates to DX12 one day 🙂

3 hours ago, Anatoli-Kagari9 said:

I am in DX12 since I migrated to Win 11, and I am really satisfied overall with it...

In my case I do see better performance with DX12 than I did with DX11.

Interesting!   What graphics card do you have?

17 hours ago, cianpars said:

From around 20 on the ground and 30 in the air in DX11 up to 40 on the ground and 60 in the air in DX12, Andy.  It's a bit of a puzzle to say the least as nobody else seems to be getting such an FPS jump in DX12 (or an FPS halving in DX11 if you want to look at it that way).

Stupid question, but is this reproducible on your end? If you NOW switch back to DX11, you again loose those FPS? I guess not, because I simply think you have VSYNC and/or a frame limit on in your MSFS menue and because of the strange way MSFS handles those FPS limits, you get more FPS with the new monitor that is capable of higher refresh rates. Dont pin me on the exact numbers, but as far as I understood, if you set the frame limiter inside MSFS to 60, it simply means that the engine is limited to the monitor refresh rate, e.g. 120Hz -> 120FPS. The setting 30 means half of the refresh rate in FPS, e.g. 60 on this monitor. Means: with a 120Hz monitor and the proper settings dialed in, you will see almost doubled FPS when using the 30 "FPS" frame limit inside MSFS. I know it sounds silly, but as far as I am aware, this is still not changed in the last updates...

Thanks for responding AnkH.  I don't think it's that.  The old monitor ran at 1080 with Vsync on and set to 60.

The new 1440 one doesn't need V sync as it uses G sync. Even if I try to limit frames either in Nvidia or MSFS, they won't limit.  Quite puzzling and this applies to DX11 and DX12.

I have tried 3 different Nvidia drivers and there is little difference between them.  When I switch back to DX11, I lose half my framerates, though it is quite smooth compared with DX12, but I just can't use it at 20 FPS and single figures in heavy photoscenery.

I've even tried running at 60hz and the frames won't limit there either.  I've gone from a 24 inch monitor to a 32 inch and really need the extra resolution.

I teally can't put my finger on where the problem is.  G Sync or Freesync? Does it make any difference to how it should be set up?

Been struggling with this since Christmas day and it's driving me nuts.

3 hours ago, bobcat999 said:

Interesting!   What graphics card do you have?

RTX3070

5 hours ago, bobcat999 said:

Interesting!   What graphics card do you have?

RTX 3060 Ti 8GB, and a Ryzen 5600x CPU. 32GB RAM.

I'm on Win 11.

Tried DX12 on day one but it was a stutters mess, so I’ve parked that until it matures.

dX11 is generally smooth for me with the occasional frame time issue - which is well known and documented by the likes of digital foundry.

Eventually DX12 will run and work fine, hopefully this will eliminate those frame time issues also - as 12 should help with the CPU pipeline issues causing said frame times

3 hours ago, cianpars said:

Thanks for responding AnkH.  I don't think it's that.  The old monitor ran at 1080 with Vsync on and set to 60.

The new 1440 one doesn't need V sync as it uses G sync. Even if I try to limit frames either in Nvidia or MSFS, they won't limit.  Quite puzzling and this applies to DX11 and DX12.

I have tried 3 different Nvidia drivers and there is little difference between them.  When I switch back to DX11, I lose half my framerates, though it is quite smooth compared with DX12, but I just can't use it at 20 FPS and single figures in heavy photoscenery.

I've even tried running at 60hz and the frames won't limit there either.  I've gone from a 24 inch monitor to a 32 inch and really need the extra resolution.

I teally can't put my finger on where the problem is.  G Sync or Freesync? Does it make any difference to how it should be set up?

Been struggling with this since Christmas day and it's driving me nuts.

What’s the max refresh rate of your old and new monitors?

18 minutes ago, hanhamreds said:

What’s the max refresh rate of your old and new monitors?

Old monitor 60 hz.  New monitor 165 hz max but running in 120 hz