Sign in to follow this  
Midnight Music

Temp fix for NVI users in clouds

Recommended Posts

If using NVI because you can't take the blurries that appear in the sim without NVI, I have experimented with a temporary solution for the FPS drop in clouds. Turn off HDR. Try it, it seems to lessen the FPS drop in clouds when using NVI. Down the road, when I get a 4K monitor, I may drop NVI and just use in sim settings, but for now high end addons like PMDG and Aerosoft Airbus just simply do not look as good inside and out without NVI help. HDR off seems to ease the FPS problems using NVI. I use the Rob Ainscough NVI settings. I also do not pin my sliders to the right, I have found a good balance for my rig which is basically an i7 4770k OC 4.2, 6GB GTX 980ti and16GB ram.

Share this post


Link to post
Help AVSIM continue to serve you!
Please donate today!

Thank you for this hint. But as always, it would be really nice to share which settings you actually use, both in P3Dv3 and in your NVI profile. "I use Rob Ainscough NVI settings" does not help me that much for example as there is no link and nothing. So, nice that you use those settings, but what are they?

Share this post


Link to post

Where can I find Rob's NVI settings for P3Dv3 ?

 

( a desperate jcomm fighting not to buy the Pro License of P3Dv3, after having bought v2 just one month before the release :-/ ... )

 

But yesterday, exchanging PMs with one of the P3Dv3 ( very satisfied ) user, he confirmed not using NVI at all, and getting excellent performance from P3Dv3, much better than with any previous version of the sim or of FSX.

Share this post


Link to post

 

But yesterday, exchanging PMs with one of the P3Dv3 ( very satisfied ) user, he confirmed not using NVI at all, and getting excellent performance from P3Dv3, much better than with any previous version of the sim or of FSX.

Same experience as that unnamed user here :-)

 

Kind regards, Michael

Share this post


Link to post

Interesting however I don't know what difference HDR would make to the performance. Worth a try though.

 

IMO It's impossible to not use 4xSGSS unless your running 4K as the sim looks horrendous without it.

Share this post


Link to post

I use NI with 4x SGSS otherwise the SIM is full of shimmering and jaggies.

With two GTX 980 in SLI (with single monitor works well), I see no difference in performance with HDR on or off, but I use off because the colors seem more realistic.

  • Upvote 1

Share this post


Link to post

( a desperate jcomm fighting not to buy the Pro License of P3Dv3, after having bought v2 just one month before the release :-/ ... )

Take advantage of the Prepar3D 60 day money back. Explained on the LM website.

Share this post


Link to post

I am on the 10 buck a month plan so can drop it any day if needed. But so far I like it. I set up a flight from O'Hare with both FSXSE and P3Dv3, same runway, same weather (ASN).  FSXSE all sliders maxed and AI at 100 percent, P3Dv3 almost all sliders maxed and all shadows checked  plus HDR and AI at 100 percent.

 

Fps in FSXSE  just sitting on runway looking straight out from cockpit of Aerosoft Airbus at O'Hare 26 to 30 fps. Fps in same scenario P3Dv3 36 to 42. 

 

NI active in both sims and 8xSGSS  in both. Also clouds do not seem to bother my fps in either sim. I have a video I will upload soon showing the Aerosoft bus auto landing at Pago Pago in almost blind conditions during a storm with full cover clouds in P3Dv3 using ASN.

Share this post


Link to post

Sorry, Rob Ainscough is so well known to P3D users, that I assume everyone knows his page. Here is the link.

 

Thruthfully, P3D works fine without NVI, it just doesn't look as sweet as it does with NVI help, especially addons. The HDR you can switch on or off at your discretion depending on the addon you are using.

 

http://www.robainscough.com/Prepar3D_Settings_2.html

Share this post


Link to post

Thx guys,

 

P3Dv3 Professional with monthly license installed.

 

ASN and PMDG 777 Base 200-LR are my only add-ons so far. Next I will try Aerosoft LPMA ( know there are problems , but... ) and probably also Rex Soft Clouds, but I am really appreciating the skis in P3Dv3.

 

Performance great.

 

Had to set 2xSGSS in and Allow/On FXAA in NI.  HDR ON is an FPS killer, and I don't like HDR anyway ( also don't use it in DCS World and didn't use it in XP10 or IL-2 BoS ).

 

The PMDG 777 installed flawlessly, but of course the simconnect stuff had to be installed just like in the FSX:SE and previous P3D platforms.

 

So far so good :-)

 

Thx for the link to Robin's site.

Share this post


Link to post

I am on the 10 buck a month plan so can drop it any day if needed. But so far I like it. I set up a flight from O'Hare with both FSXSE and P3Dv3, same runway, same weather (ASN).  FSXSE all sliders maxed and AI at 100 percent, P3Dv3 almost all sliders maxed and all shadows checked  plus HDR and AI at 100 percent.

 

Fps in FSXSE  just sitting on runway looking straight out from cockpit of Aerosoft Airbus at O'Hare 26 to 30 fps. Fps in same scenario P3Dv3 36 to 42. 

 

NI active in both sims and 8xSGSS  in both. Also clouds do not seem to bother my fps in either sim. I have a video I will upload soon showing the Aerosoft bus auto landing at Pago Pago in almost blind conditions during a storm with full cover clouds in P3Dv3 using ASN.

With those settings, you must have a monster NASA type rig. My experience with P3d is that you have to pull your sliders away from pinning them all the way on the right. It still all looks great. Most of us use 4xSGSS in NVI and pair it with 4X Aniso in the sim. The bottom line is that you have to experiment and find your own sweet spots.

Share this post


Link to post

8xSGSS is way too much for even the best gfx cards on the market today, it will reduce your fps and cause stutters when clouds are present.

 

Contrary to what many say, the MSAA setting in P3D does NOT have to be the same as your SGSS in NVI.

 

I've found a nice compromise for my GTX 970 4GB that performs nicely in any kind of weather and that is: 8xMSAA (in P3D) and 2xSGSS in NVI.

 

If you've got a similar card, give that a try.

 

And btw, the Anisotropic setting can easily be set at 16x. No reason to go lower as this is no stress for the gfx card.

Share this post


Link to post

That's great to know, might be an ideal compromise. Can't wait to try it out.

Share this post


Link to post

8 SGSS in NI works for me but I am using 3 980's and in heavy clouds all three are working very hard at over 70 percent at 79c. I also  use an i7 5930 k at 44 mhz and P3dv3 makes that work hard as well and even with liquid cooling it runs in the high 60's c range in heavy clouds or large custom airports.

Share this post


Link to post

Peter's suggestion works quite well. 8xMSAA, 16X Aniso in the sim with 2048 textures and 2xSGSS in NVI. It clears the blurries, but still gives good performance in heavy clouds. HDR lighting on. The acid test will come tonight when I load one of the PMDG craft.

Share this post


Link to post

8xSGSS is way too much for even the best gfx cards on the market today, it will reduce your fps and cause stutters when clouds are present.

 

Contrary to what many say, the MSAA setting in P3D does NOT have to be the same as your SGSS in NVI.

 

I've found a nice compromise for my GTX 970 4GB that performs nicely in any kind of weather and that is: 8xMSAA (in P3D) and 2xSGSS in NVI.

 

If you've got a similar card, give that a try.

 

And btw, the Anisotropic setting can easily be set at 16x. No reason to go lower as this is no stress for the gfx card.

 

Do you disable FXAA in P3D with these settings or leave it on?

Share this post


Link to post

FXAA off. If you are limiting your frames, you don't need Vsync or Triple Buffering either. I am reading a lot lately about adding and AffinityMask setting. I am trying out 85 for the moment. Seems to be working well. I have done some NGX hops with ASN and it all looks promising.

Share this post


Link to post

So the SGSS smooths out the loss of FXAA? Without FXAA the VC is more readable but the exterior is super jaggy.

Share this post


Link to post

Yes, unless you have a 4k monitor and can run at a higher resolution, then you don't need SGSS. However, like most of us, I am running a 1920X1080 monitor so I need that little bit of extra polish SSGS provides. Otherwise, things get jaggy.

Share this post


Link to post

I run 2xSGSS and everything still Shimmers like crazy, the AA in P3D is terrible wish they could do something about it. 4xSGSS kills my FPS in clouds unlike in FSX w/DX10

Share this post


Link to post

On several sites I have read that the amount of SGSS has to be the same as the amount of MSAA .

SGSS uses MSAA data as a base and therefore 8x MSAA with 4x SGSS is looking less good than 4x MSAA with 4x SGSS...

 

Quote from Overclock.net :

You must set the Sparse Grid Sample number to the exact same amount of multi-samples. In other words if you are using 4XSparse Gride you also MUST use 4xMSAA in the profile. Otherwise you will end up with a blurry mess.

 

You also are going to have to set the LOD bias so there is no blurring. You must change the LOD bias setting from clamp to allow. This is a general guideline on LOD bias settings.

 

2x MSAA + 2x SGSSAA: -0.500

4x MSAA + 4x SGSSAA: -1.000

8x MSAA + 8x SGSSAA: -1.500

Share this post


Link to post

Thanks Gerard, very helpful, I was always in doubt  about that LOD bias setting.

 

Kind reards, Michael

Share this post


Link to post

Well, it's obvious that you don't HAVE to match the ammount of MSAA and SGAA. Try mixing and matching these and you'll get different results both graphically and performance wise.

I just tried 2xMSAA and 4xSGAA and that also gave a tolerable compromise. GPU load was around 70% in heavy clouds so within bounds.

8xMSAA and 2xSGAA was again a little easier on the GPU load.

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this