Why is Active Sky Such a Hit on Framerates ????? - SOLVED !!

[Gabe777 132]

 

EDIT - Now Solved - see bottom post

 

Unless I all but take off ALL Anti Aliasing, my FPS drops to 10 or 15 FPS from 200  (!!!) ..... when in or going towards cloud.

I have an i7 7700 and a 1080 GTX. No slouch.

Pan away from the cloud - 200 fps in the Twotter….. pan towards he cloud or in the VC - less than 25 fps.....

I have cloud textures at lowest possible size and only 3 layers.

 

This program is a joke, and you need to start from scratch.

 

Simply unusable..... I hate to think what it's like with all the settings jazzed up.

 

Immediate uninstall for me.

Edited January 2, 2019 by Gabe777

[lownslo 592]

Works just fine here.  What are you using for cloud textures?

Greg

[newtie 533]

Immediate uninstall for me.

Have at it...

Edited January 2, 2019 by newtie
sp

[pgde 571]

Have you contacted AS tech support? You are in a minority, many have no problem with performance. It is one of the best selling add-ons and if there were issues as you portray, it wouldn't be.

[Starlifter60 83]

I've got a very modest i7700 / GTX 1070 system and AS hardly makes a dent in my FPS. Might want to broaden your investigation a little before you delete. Just my 2c...

Brian

 

[Ops Normal 57]

I used to get very poor frame rates with active sky and Rex force. I have an I7-7700K with GTX1070 and over Europe with Overcast conditions my system will grind to a halt.

1. I noticed if i tun down texture filtering all the way down to 2X or Trilinear it help a bit.

2. maybe also linked to option 1 above was my cloud textures where usually at 4096 HD. so i now use 512 or 1024 and it seems to help alot.

3. i reset all the mods i made on Nvidia Inspector.

4. i recently turn HT off as suggested by another forum and my system runs very well.

 

The only thing am battling with is slow loading of autogen at the destination airport. but i dont get any more low FPS in overcast conditions near EHAM or anywhere else. my current settings are

fxaa=off

AA=4XSSAA

Texture filtering= 8x

texture res = ultra 4096 [ cloud resolution 512 or 1024 from rexSF]

cloud draw distance = 80

cloud layers on Active sky= 5

all locked and smooth at 30FPS.

[mpw8679 428]

1 hour ago, Gabe777 said:

Unless I all but take off ALL Anti Aliasing, my FPS drops to 10 or 15 FPS from 200  (!!!) ..... when in or going towards cloud.

I have an i7 7700 and a 1080 GTX. No slouch.

Pan away from the cloud - 200 fps in the Twotter….. pan towards he cloud or in the VC - less than 25 fps.....

I have cloud textures at lowest possible size and only 3 layers.

 

This program is a joke, and you need to start from scratch.

 

Simply unusable..... I hate to think what it's like with all the settings jazzed up.

 

Immediate uninstall for me.

In the mechanical world we call this operator error.

[Gabe777 132]

Guys - I have minimum ASCA settings 256k / but if overcast conditions prevail, it is literally reducing my FPS to 20 to 25 from as high as 200.

 

Just sat in PMDG VC and getting 60 fps smooth - with cirrus and stratus layer x2. Add in Cumulous and load an overcast weather condition scenario, and drops to 20.

 

Even reducing AA to 2xMSAA makes little effect - about 10% better, tops.

 

Even the Twotter at 200 fps, drops to 20.

 

Don't get it.

 

Perfect if I don't use Cumulous or skies are quite clear. Beautiful skies at dawn and dusk, but using real weather is just a non starter.

[Gabe777 132]

2 minutes ago, mpw8679 said:

In the mechanical world we call this operator error.

Yes well, I'm guessing your one of the 23 fps people - Locked !!!

 

Whatevs.

[mpw8679 428]

1 minute ago, Gabe777 said:

Guys - I have minimum ASCA settings 256k / but if overcast conditions prevail, it is literally reducing my FPS to 20 to 25 from as high as 200.

 

Just sat in PMDG VC and getting 60 fps smooth - with cirrus and stratus layer x2. Add in Cumulous and load an overcast weather condition scenario, and drops to 20.

 

Even reducing AA to 2xMSAA makes little effect - about 10% better, tops.

 

Even the Twotter at 200 fps, drops to 20.

 

Don't get it.

 

Perfect if I don't use Cumulous or skies are quite clear. Beautiful skies at dawn and dusk, but using real weather is just a non starter.

What is your GPU usage % when u have the frame rate issues?

[mpw8679 428]

Just now, Gabe777 said:

Yes well, I'm guessing your one of the 23 fps people - Locked !!!

 

Whatevs.

30 FPS

[flyinpilot212121 724]

I can also confirm no real issues with it on my end, And I have a SLOOOOWWWW computer.

Im as far as you can get to understanding any coding etc that goes into making these programs but have you tried an uninstall re-install perhaps?

[FreeBird(Josh) 314]

I had issues similar to yours and my fix was to reduce the cloud draw distance in AS to about 90 miles for some reason it was set to 180 miles and when ever I got into heavy stuff it would slow to a crawl.  Josh

[Gabe777 132]

Yes I have all the default settings  90 and 90, with 199 for the other.

 

https://www.avsim.com/forums/topic/515373-horrible-fps-loss-with-clouds/

 

For example.... it aint just me.

 

Just looking at overcast cumulus clouds is enough to cripple performance. Even switching off AA completely is not affecting it.

[MarkDH 234]

12 minutes ago, Gabe777 said:

Even switching off AA completely is not affecting it.

Well maybe that's a sign of the problem being elsewhere? Obviously adding clouds and cloud layers is going to hit performance but it shouldn't be as bad as you describe. I run with REX cloud textures (conservative ones, so I think 1024 for the low-level clouds and 512 for the cirrus).  Oh yes, and I have the Soft Clouds textures for low-level clouds. I have a target of 40fps and my performance is generally okay, which broadly speaking means varying between 20 and 40fps according to the weather specifics. That's with a three-screen viewgroup display on a GTX1070, flying the Twin Otter with an out-the-window view only. And I didn't do anything special to get that.

I don't know how ASCA works, but i my setup I can save the situation and then load up the same weather without AS running. If you can do this and the performance is better it might suggest AS is doing a whole bunch of something else behind the scenes.