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Old 03-19-09, 09:30 PM   #2437
sillyeagle
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Default Re: Flight Simulator X Feedback Thread

Alright guys, I just stumbled on a tweak that I'm calling a miracle. It may not work the same on all systems, but on my i7 rig it has transformed everything. It's very simple, and with it I'm able to run EXTREMELY DENSE autogen at default levels, meaning DEFAULT max per cell values, with NO STUTTERS of any kind, totally glass smooth, and no blurries.

Depending on the area I am able to do this at a full 25-45fps, never going below 25. I've tested this with and without the new fps limiter utility, and I am getting best results WITHOUT it.

The tweak is to use UMLIMTED frame rate, and set a BUFFER POOL value of 200MB-300MB. The Buffer Pool is what makes or breaks stutters on my system. You will need lots of video RAM for this, though on my 900MB GTX260 I am able to run 300MB, and also use 2048 non DXT5 clouds, 8xS supersampling, and 16xAF at 1600x1200 with no impact on performance.

The shots below show Extremely Dense autogen with no max per cell tweak in use, and the flight was glass smooth, unbelievably smooth. The urban shots are running at 25-27fps, and the rural shots are running 30-40fps. If I drop Buffer Pools back down to 100MB for example, the game becomes and stuttering mess and absolutely unplayable with this kind of autogen.

Give a 200-300MB Buffer Pool a try and let me know how it goes. It works well in combination with the fps limiter utility since that too uses unlimited framerate, but I was getting faster frames when starting without the modified bat.

I simply can't beleive I'm getting 25-40fps in these scenes with not a single stutter.







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Old 03-20-09, 02:41 AM   #2438
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Default Re: Flight Simulator X Feedback Thread

Running 25-27fps here, not even the slightest stutter.









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Old 03-20-09, 02:47 AM   #2439
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Default Re: Flight Simulator X Feedback Thread

sorry for the dumb question, how do you use that, lets say for 300MB? Or better, what should I do (and how) when I run 2 GTX 285 in SLI?
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Old 03-20-09, 02:56 AM   #2440
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Default Re: Flight Simulator X Feedback Thread

If you have never added Buffer Pools it will not be in the cfg file, so it will need to be added. Just add it to the bottom of the cfg file.

So for a 300MB Buffer Pool you would add this:

[BUFFERPOOLS]
PoolSize=300000000

The cfg file is here in Vista, but I can't remember where in XP, though in a similar spot.
C:\Users\username\AppData\Roaming\Microsoft\FSX

I was able to run extremely dense with 200MB and only very minor stutters, but 300MB was perfect.

I have always been an unlimited flyer due to the extra performance over locking, but since switching to i7 I have not been able to get rid of stutters with unlimited. Finally the fps limiter tool helped me to achieve that, but even so going real high on autogen still produced a stuttering mess. With 300MB I cannot induce stuttering if I try.

The other cftg tweaks I'm using are below. Using a texture bandwidth mult of 80-120 helps to keep things moving well. 80 was good on my Core 2 quad, but with i7 I use 120.

[DISPLAY]
TEXTURE_BANDWIDTH_MULT=120

[JOBSCHEDULER]
AffinityMask=15

Using other high video memory setting may prevent you from using this tweak, or limit you to 200MB. High levels of antialiasing, high screen resolution, high definition clouds, and texture intensive sceneries like YMML are items to consider when tuning as these are what will drive video memory usage up.
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Old 03-20-09, 03:16 AM   #2441
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Default Re: Flight Simulator X Feedback Thread

Thanks, I'll try that right away.
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Old 03-20-09, 04:36 AM   #2442
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Default Re: Flight Simulator X Feedback Thread

Well, with this settings I got rid of the blurries (not totaly) but the framerate is not good enough over the city with everything maxed. Tested on the plain FSX, no ad-on, no REX, just this plane and gizmo's 4096 dx9 water normals, so, sorry for the bad screens.



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Old 03-20-09, 06:52 AM   #2443
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Default Re: Flight Simulator X Feedback Thread

Yep,running better. Man, I must put REX on and of course Van+


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Old 03-20-09, 02:06 PM   #2444
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Default Re: Flight Simulator X Feedback Thread

Well, the same thing with REX on, still default Vancouver.
@slaWter hey, congratulation on your SSD. When I'M lucky, I'll get my TackIR tomorrow. Man, I was soooooooooo ignorant. Till yesterday I didn't even know what this is. I saw here someone talking about but I didn't bother then to see what this is. You get old and you still learn.



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Old 03-20-09, 09:16 PM   #2445
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Default Re: Flight Simulator X Feedback Thread

Yeah I have HT disabled. Extremely Dense works good in most cases where autogen is scattered, though if I fly over a giant forrest that is pure trees to the horizon or city with houses to the horizon it drops below 20, but even so not a single stutter. So ussual tuning advice still applies, though it's nice to be able to tune to framerate a alone, and not have to work around stutters.
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Old 03-21-09, 11:43 AM   #2446
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Default Re: Flight Simulator X Feedback Thread

Quote:
Originally Posted by sillyeagle View Post
Yeah I have HT disabled. Extremely Dense works good in most cases where autogen is scattered, though if I fly over a giant forrest that is pure trees to the horizon or city with houses to the horizon it drops below 20, but even so not a single stutter. So ussual tuning advice still applies, though it's nice to be able to tune to framerate a alone, and not have to work around stutters.
Hi Silly,
Would it be possible for you to post all your FSX.cfg settings ?
I was stutter free but recently did something that has brought them back. Not sure if it was something that I installed in Vista or FSX.

Since our systems are very similar I would like to compare our settings.

thanks
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Old 03-21-09, 02:20 PM   #2447
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Default Re: Flight Simulator X Feedback Thread

Mmmh, enjoying AU.





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Old 03-21-09, 04:41 PM   #2448
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Default Re: Flight Simulator X Feedback Thread

Nice shots NuBee!

@ wildcard here's all my tweaks. I also tested extremely dense autogen over Los Angelos, around LAX, and it never dropped below 30fps while in the air, staying in th 30-45fps range. I do fly with all AI and traffic off though.

[Display]
TEXTURE_BANDWIDTH_MULT=150

[SCENERY]
SmallPartRejectRadius=3

[BUFFERPOOLS]
PoolSize=300000000

[JOBSCHEDULER]
AffinityMask=15
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