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FS9 Static Gulfstream is slow under FSX

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whitav8

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us-california
I hope I'm not opening up an old wound or talking about an issue that is already been mentioned in this forum but I just want to know what I am up against. I want to add maybe 10 or 20 static aircraft to an airport. I have a library of most GA aircraft that was made for FSX (and with very nice fidelity in terms of polygon accuracy and textures) and I can add 10 or 20 of them and I won't see any significant drop in FPS (I normally get about 50 fps). I have utilized SAMM nicely to build a library with several different Gulfstream 4 or 5 models - even one that supposedly was a GMAX model - and my performance with just 1 or 2 Gulfstreams drops to 40 fps. Does the FSX rendering engine just not like these FS9 models? Thanks much for any insight.
 
my performance with just 1 or 2 Gulfstreams drops to 40 fps
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If the models were complex, flyable aircraft, this is not surprising. What kind of FPS do you get if you position a couple of these aircraft on the field as AI. Almost certainly, it will be worse.

SAMM doesn't affect the model per se. What SAMM does is remove all the animations (which, in a complex aircraft, should make a significant improvement.) But, if the flyable model contains 20-30000 polys, so will the static model.

Also, note that most flyable aircraft will not have LODs. So, you get the full FPS hit all the time the aircraft is in view.

Try and find an AI Gulfstream. It will likely have LODs and very few animations. (Flyable aircraft are "pretty" but you pay for that in FPS.)

Don
 
Don, thanks for the quick response. I have tried several and still see the drop in performance. If I make a library out of a flyable Bell 206 or the Grumman Goose frrom the default FSX simobjects, I don't see any real slowdown at all even though they have a lot of polys - the problem with doing that for maybe the LearJet or some other FSX-only bizjet is that the gear won't be down. THis is why I tried SAMM - but the performance of the FS9 object appears to be taking several milliseconds. Yes, I have tried placing 10 of them and it really slows down. I will keep trying.
 
I ended up downloading the development release of ModelConverterX, loaded my Gulfstream V that I had produced via SAMM, removed all LODs, removed all animations, minimized drawcalls (converting BMP textures to DDS as well), and rebuilt the library. This resulted in very good FSX performance.
 
What Gulfstream model are you using? Would you please send me the whole aircraft folder or a link to the aircraft.

As I said before, SAMM should significantly reduce the preformance "hit" for any model. Since this is not the case with the model you have chosen, then there must be something unusual about that model.

Since I've got SAMM "torn apart" to develop Version 2, now would be a good time to see if there's a previously unreported issue.

Don
 
I converted the aircraft and ran it under FSX. Nice model!

My experience was similar to yours. I was surprised - until I noticed that the whole interior is modeled in detail.

No wonder there's a big FPS hit. The model contains over 40,000 - yes, that's 4 0s - polys! (Some airports don't have 40,000 polys in total.) But, you wouldn't have known that unless you generated listings. (I think I'll move that little tidbit of information onto the main panel in SAMM 2.)

I'm glad that Arno's MCX was able to improve performance. But, once you've converted the static model to FSX format (which is very different and much more efficient), you are really comparing "apples and oranges". Nonetheless, if that approach works for you, then it may be helpful to others who wish to run SAMM conversions of very detailed FS8/9 converted aircraft under FSX.

Don
 
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