Flying near trees causes great fps loss.

[domini99]

As the entire point of the KA-50 is NOT to fly very high, it is really killing it for me.

Nice 40 to 60 FPS when flying at altitudes higher than a couple thousand feet, when I fly low fps goes below 20 and lots of stuttering.

[Esac_mirmidon]

See my specs below.

 

I have the very same problem. Tested with different Nvidia settings and ingame settings and it´s always the same.

 

With any kind of trees shades flying low causes FPS drops from steady 60 to 35-40 and a heavy sttuter. Flying high again steady 60 FPS no stutter at all.

 

With Mustang no shadows mod the game runs as silk.

[NineLine]

For those that need it, here's Mustang's No Tree Shadow mod JSGME Ready.

 

 

 

FYI guys, this is a beta, installing mods that remove something instead of trying to wait it out and provide data for hopes to get it resolved kind of defeats the purpose...

[Esac_mirmidon]

True.

 

But it helps in our testing searching the origin of bugs, perfomance issues.

 

We can´t turn off shadows right now, this mod is the only tool we have to compare and test it.

[NineLine]

People having issues, can you tell me how much vram you have on your vid cards?

[NineLine]

Update: tried with flat shadows on, but trees still made fps go insanely down.

 

So I installed the mustang mod to remove tree shadows. The problem is gone.

 

Are you setting flat shadows under the shadows drop down, or the terrain shadows?

[Esac_mirmidon]

In my case:

 

MSI 770 Lightning 2 / VRAM 2 Gigas.

[NineLine]

In my case:

 

MSI 770 Lightning 2 / VRAM 2 Gigas.

 

Starting to see a pattern with anything under 3Gb... can you check your VRAM usage when you are seeing FPS issues?

[Esac_mirmidon]

Could be kind to point me how to test how much Vram i´m using?

 

Also i´m going to test a clean 1.5 with my card ( a good example of medium/high end ) with:

 

Shadows FLAT ONLY/ OFF

 

And

 

Flat Terrain Shadows OFF/ON

 

Also i´ve noticed a big FPS impact with Nvidia AA Transparency OFF/Multi/Supersampling. In OFF or Multisampling i have a great boost in FPS, in supersampling i have worst FPS.

 

I will try this also with trees shadows.

[NineLine]

A program like this can log info like that:

 

http://www.techpowerup.com/gpuz/

 

There are others as well.

 

2Gb being the minimum right now for 1.5, you may find you have to turn somethings down to get it dialed in for sure...

[Esac_mirmidon]

This is my test.

 

Using always the Fast Mission Su-25T CAS Support Easy.

 

Flat Terrain OFF . Everything maxed out: FPS Max 60 Min 38. A lot stutter. Vram Max 1935 megas.

 

Flat Terrain Shadows ON- Options Maxed out: FPS Max 60 Min 40. A lot Stutter. Vram Max 1915 megas.

 

Flat Terrain Shadows ON- Shadows High: FPS Max 60 Min 40, A little less Stutter. Vram Max 1918 megas.

 

Flat Terrain Shadows ON- Shadows Med: Max FPS 60 Min 44, less noticeable Stutter. Vram Max 1840 megas.

 

Flat Terrain Shadows ON- Shadows Low: Max PFS 60 Min 55. Almost no Stutter at all. Vram Max 1790 megas.

 

Flat Terrain Shadows ON- Shadows Flat Only: Max FPS 60 Min 60. No Stutter. Vram Max 1770 megas.

 

Flat Terrain Shadows ON- Shadows Off: max FPS 60 Min 60. NO Stutter. Vram Max 1770 megas.

 

So it seems the sweet spot is around 1800 megas Vram. Over 1800 FPS hit and Stutter. Below 1800 FPS gain and almost no stutter.

 

For those who like the trees shadows Flat Terrain ON and Shadows MED is a good balance because with Shadows Low-Flat-OFF you loose in cockpit shadows and outside improved shadows over the aircraft.

 

The looking of trees shadows between ULTRA and FLAT are almost the same. No difference for me, except FPS and sttuter.

 

On the other hand, with no trees shadows mod i´m able to max everything out with no FPS loose and no stutter at all. WIth the best cockpit shadows inside and the best aircraft shadows outside but without forest shadows.

 

One thing i´ve notice is that the cities and village trees are casting shadows with the mod installed but this trees doesn´t have any impact on fps or stutter at all.

 

And also ONLY FLYING LOW.

 

Flying over 1000 meters the FPS are steady and no stutter.

Edited October 13, 2015 by Esac_mirmidon

[OttoPus]

Are you setting flat shadows under the shadows drop down, or the terrain shadows?

 

Yup, the last post I made shows the settings also.

 

I removed the mod of course.

 

Video Ram: 2gigs. GPU-Z shows the 2 gigs immediately saturated as soon as I start any mission.

 

Thanks!

[Nedum]

People having issues, can you tell me how much vram you have on your vid cards?

 

4 GiB VRAM

[NineLine]

4 GiB VRAM

 

Can you check your vram usage, I think I heard something about the latest AMD drivers had a memory leak or something...

[NineLine]

Great info, thanks! I hope it will help others as well, when sitting on or near minimum specs, some tweaking will need to be done to get the most out of your system.

 

This is my test.

 

Using always the Fast Mission Su-25T CAS Support Easy.

 

Flat Terrain OFF . Everything maxed out: FPS Max 60 Min 38. A lot stutter. Vram Max 1935 megas.

 

Flat Terrain Shadows ON- Options Maxed out: FPS Max 60 Min 40. A lot Stutter. Vram Max 1915 megas.

 

Flat Terrain Shadows ON- Shadows High: FPS Max 60 Min 40, A little less Stutter. Vram Max 1918 megas.

 

Flat Terrain Shadows ON- Shadows Med: Max FPS 60 Min 44, less noticeable Stutter. Vram Max 1840 megas.

 

Flat Terrain Shadows ON- Shadows Low: Max PFS 60 Min 55. Almost no Stutter at all. Vram Max 1790 megas.

 

Flat Terrain Shadows ON- Shadows Flat Only: Max FPS 60 Min 60. No Stutter. Vram Max 1770 megas.

 

Flat Terrain Shadows ON- Shadows Off: max FPS 60 Min 60. NO Stutter. Vram Max 1770 megas.

 

So it seems the sweet spot is around 1800 megas Vram. Over 1800 FPS hit and Stutter. Below 1800 FPS gain and almost no stutter.

 

For those who like the trees shadows Flat Terrain ON and Shadows MED is a good balance because with Shadows Low-Flat-OFF you loose in cockpit shadows and outside improved shadows over the aircraft.

 

The looking of trees shadows between ULTRA and FLAT are almost the same. No difference for me, except FPS and sttuter.

 

On the other hand, with no trees shadows mod i´m able to max everything out with no FPS loose and no stutter at all. WIth the best cockpit shadows inside and the best aircraft shadows outside but without forest shadows.

 

One thing i´ve notice is that the cities and village trees are casting shadows with the mod installed but this trees doesn´t have any impact on fps or stutter at all.

 

And also ONLY FLYING LOW.

 

Flying over 1000 meters the FPS are steady and no stutter.

[MAD-MM]

My Video card is also at 2 GB VRAM have no test done so fare, when the the shadows overlaying the trees it's seems the most trouble. (Daytime)

let it see was the beta optimisation brings, or it's time for new video card.

Before was only not sure what is wrong thx

[Nedum]

Can you check your vram usage, I think I heard something about the latest AMD drivers had a memory leak or something...

 

During the D-9 intercept quick mission max 2178 MiB VRAM in use.

The more I close to the forrest the more the FPS went down.

From 97 -> 23.

I don't know what it is, but as long as the shadows are on it doens't matter if they are low or Ultra. The FPS are always the same also the FPS lost.

No change if I change the vision range too.

The VRAM use is really low, like there are to many things not loaded to the VRAM and the CPU is doing the whole work.

I will test some things later (other drivers) and give you a report.

[NineLine]

During the D-9 intercept quick mission max 2178 MiB VRAM in use.

The more I close to the forrest the more the FPS went down.

From 97 -> 23.

I don't know what it is, but as long as the shadows are on it doens't matter if they are low or Ultra. The FPS are always the same also the FPS lost.

No change if I change the vision range too.

The VRAM use is really low, like there are to many things not loaded to the VRAM and the CPU is doing the whole work.

I will test some things later (other drivers) and give you a report.

 

Sounds good, let me know...

[Panzertard]

SithSpawn: The findings could point to the fact that it would be nice to get a 'VRam usage' indicator in the Option-section.

When the user changes options, a sum total estimate could keep an eye out for overcommit.

 

I've seen some titles out there in the industry do this to prevent users from having to be a technician to be able to figure this out by themselves.

GTA5, Arma-series and a few more have such a tool in the settings.

Having to use a 3'rd party tool is a indicator that this is a needed feature within the options.

 

Perhaps you could forward such a request? :)

[danilop]

Disable Tree Shadows option is all that's needed for majority of users with previous gen GPUs.

 

Either that, or No Tree Shadows mod.

 

Yeah, I know it's beta and that we shouldn't mod it, but it's obvious that medium spec systems are going to struggle with shadows.

[OttoPus]

I also found that with shadows on "LOW", flat shadows on, Trees limited to 5000, at low altitude I still get stutter and low fps over trees.

 

I'll have to learn gpu-z log feature, then I'll post the results.

[OnlyforDCS]

This has been mentioned a million times already but maybe it's worth another mention. VSYNC has been known to cause stutters when the frame rate keeps dropping below 60 FPS frequently. For anyone with reasonably good frame rates (40-60 FPS) try enabling ADAPTIVE VSYNC in your windows video options. (Nvidia 3d settings, don't know if AMD has something similar).

 

Combined with full screen (LALT + ENTER) I have had great success in getting very smooth gameplay despite the frames dropping to 40 ish or so when flying low near trees or next to busy airfields etc.

[NineLine]

SithSpawn: The findings could point to the fact that it would be nice to get a 'VRam usage' indicator in the Option-section.

When the user changes options, a sum total estimate could keep an eye out for overcommit.

 

I've seen some titles out there in the industry do this to prevent users from having to be a technician to be able to figure this out by themselves.

GTA5, Arma-series and a few more have such a tool in the settings.

Having to use a 3'rd party tool is a indicator that this is a needed feature within the options.

 

Perhaps you could forward such a request? :)

 

I am not sure they are going to be interested in investing any development time on something like that when there are a number of free tools out there that do that. Bigger studios can probably afford that kinda fluff...

[Panzertard]

I am not sure they are going to be interested in investing any development time on something like that when there are a number of free tools out there that do that. Bigger studios can probably afford that kinda fluff...

I understand what you're saying, I can understand the resource situation, we know how tight it usually is. However if you leave a request in Mantis it may be evaluated for later versions, especially if they revamp the UI again for a new version down the road.

 

At least they receive a notification of the suggestion then :)

[sniperwolfpk5]

I think there should be different shadow options for users to enable or disable it and currently the shadow options are very confusing.