Hello guys,

 

I still some issues with my FPS in heavy clouds. AFAIK my cfg is perfectly tweaked and NI has the good settings too. (I used DX10 How-to-doc to set everything)

I use REX 4 for the clouds textures and ASN for the weather.

I tried everything. New cloud theme, lowered maximum cloud layers in ASN. I sure forgot something.

 

Has anybody got some extra hints to gain FPS with an overcast sky?

 

Thnks!

 

PS: I now have a GTX 560. Over 2 weeks I get a GTX 680. Hope that helps too!

 

EDIT: In DX9 mode my fps were always fine with an overcast sky!

I had the same issue on my setup, using ASE.

 

Lowered clouds resolution to 256x256 and water to 1024x1024 in my case.

And also went from ASE to OpusFSX.

I kept using 4XCSAA antialias.

 

That fixed totally the issue for me. Sure clouds are not Pixar or Disney anymore, but I am perfectly smooth in OVC conditions.

 

Core I7 and GTX 760 here.

 

Also make sure the nvidia entry in fsx.cfg is not deduplicate. That's a FPS killer but you notice it right on the ground usually.

Ive struggled with this issue as well, for me even with no aa at all and default fsx clouds I was getting low fps anytime there were alot of layers or towering cumulus.  I found that having water set higher than low 2x caused the fps drop.  Must have something to do with how fsx handles cloud reflections  

Here I have 2 different fsx.cfg files :

- Sunny weather version : water 2x low

- Cloudy / Night version : water 1x low

 

In this way I can fly with multiple thick cloud layers over very detailed scenery ( photo + ag ) and still have a good framerate...

Also make sure the nvidia entry in fsx.cfg is not deduplicate. That's a FPS killer but you notice it right on the ground usually.

 

Hi Jerome,

 

what entries do you mean?

Hi Jerome,

 

what entries do you mean?

The display device sections !

So, now I have:

 

[DISPLAY.Device.NVIDIA GeForce GTX 660 Ti.0]
Mode=1024x768x32

 

[DISPLAY.Device.NVIDIA GeForce GTX 660 Ti.0.0]
AntiAlias=1
Mode=1280x1024x32
Anisotropic=1

 

Should I delete first one?

Do you have only one screen ?

Just delete both, then fire up fsx, it will reconstruct a clean, single entry.

Then, within fsx, restore manually your antialias, resolution mode, and filtering settings.

Yes, I have only one screen.

Hi, Just wondered if you have HT enabled? The usual problem to face dense cloud cover is poorly distributed threads with HT enabled. With HT enabled try an Affinity Mask of 168. If you don't have HT enabled then the problem lies elsewhere.

No, I don't have HT. Also, I don't have big fps drop in dense clouds (however I have visible fps drop at the bigger airports especially on VATSIM). Above posts just inspirate me to ask... maybe I don't need the:

 

[DISPLAY.Device.NVIDIA GeForce GTX 660 Ti.0]
Mode=1024x768x32

 

...if I use DX10?

I've got this section, ".0.0", no others, single screen:

[DISPLAY.Device.NVIDIA GeForce GTX 680.0.0]
Mode=1920x1200x32
Anisotropic=1
AntiAlias=1
 

Ok, so I'll delete:

[DISPLAY.Device.NVIDIA GeForce GTX 660 Ti.0]
Mode=1024x768x32

 

Thanks!