Per *******' setup instructions, I have tried unlimited frames with a limiter, I tried unlimited with no limiter, and have bounced around from 30-50 locked. No matter how smooth I get it, there is a slightly noticeable stutter/drag after about 10 seconds of absolute butter. It is after the same interval that this occurs. I have noted that my FPS does not change per the indicator. I can live with it, but was wondering if anyone out there has found a way around this. Traffic is off by the way...thanks.

 

Using NickN's settings in Nvidia inspector with hardware stated in sig.

 

btw - it is more of a drag than a stutter if that makes any sense at all. Very subtle..

 

Danon-

Pretty sure it's impossible to get rid of the random hitching that occurs in FSX.. It can either be a sharp `snap' (hitch) or a slightly smooth slow down. Cockpit view, yes that should be smooth 95% of the time with the rare occasional `hiccup' if you have it dialed in.. It's the external chase cam that is usually the one that will give a nice `hiccup' every 15 seconds or so. I even set global settings to low and still got it. There is no magic pill that will make it go away it's unfortunately.. I think it's down to VRAM management and FSX just has no idea how to properly handle modern graphics cards. I see you run 580s in SLI, I have a 6990 (Dual GPU card) and get it yet can coast over Orbx scenery maxed on a sunny day at 30fps and higher if I unlock the cap.

 

I'm assuming that's what you're talking about..

You nailed it I believe. If I uncap the frames and set unlimited, it stays above 45 the entire time while flying the baytower RV over Orbx Seattle (with a more obvious hitch everynow and then). Limit the frames to anything inside of 30-45, and that rhythmic drag is there.

 

It just stinks that this is the way it is I suppose.....the occasional hitch/stutter/drag.......

 

Thanks though =-=

Maybe someone else will chime in but I've tried every magic trick under the book and they never went away.. Everything from an unmodified cfg, to buffer pools to affinitymasks to wishing upon a star, Crossfire, no crossfire, MSAA, AAA, SSAA combinations etc etc etc. Nothing ever made them go away. I just stick with Bejote's auto configure and leave it at that now..

In my experience if the pause happens every x seconds as if on schedule, then it has always been something running in the background, and can often be spotted in task manager each time the pause occurs. Either in the form of cpu usage spikes or an .exe appearing/disappearing from the processes list.

OK, do following to see if you have something else than FSX-induced stutters, which can't be prevented:

 

Set your settings really low, position yourself far away from any civilization or cities, and make sure you get 60fps in the external view (given that your monitor refresh is 60hz). Pan around. Is it perfectly smooth?

 

If the answer is yes, then yes, what you are seeing with 30-50fps is FPS induced stutters which can't be prevented.

You shouldn't be running anywhere higher than 30fps locked.

 

The problem is, your framerate fluctuation is going to be high if you go for higher frames. Either set quality down or you set FPS down. You have to compromise.

 

Beside that, the only tweaks I suggest are:

Correct Affinitymask

Usepools=0

HIGHMEMFIX=1

FIBER_FRAME_TIME_FRACTION which works best for you, start with 0.25, and on each flight lower it by 0.05, checking when you start getting blurries and slow autogen-loading.

Water MUST be High 2.x if you use BP=0.

 

Bojote tool might be OK, but still, have to check those settings. Bojote's tool is not going to give great FPS, but rather a stability with lower frames.

 

************

 

If the answer is no, then you have windows problems, gotta start troubleshooting there.

SLI graphics cards have been known to cause stuttering. I would also recommend UsePools=0 along with the internal limiter at 30fps

Word Not Allowed, my experience and testing showed exactly what you say.

 

There is a stuttering that relates to the monitor refresh rate vs the FSX frame rate that, as it seems, you cannot get rid of.

 

About a year ago I experimented by lowering the monitor refresh rate to 50Hz and locking the FPS to 25. The micro-stutter frequency and intensity was the same as when the monitor was at 60Hz and the FPS locked at 30. It's the ratio that matters.

 

I tested the smoothness by increasing the FPS limit by 1 every time. I started with a limit of about 16 FPS and went up to 40 FPS. In every case the smoothest flight was attained when the FPS limit was half the monitor refresh rate.

 

The ideal would be to have constantly the same FPS as the monitor refresh rate but that is not possible, so we go to plan B which is is half the monitor refresh rate. For a not so powerful PC, you could lock to 25 instead of 30 and get the same smoothness if you set the monitor at 50Hz.

He described a stutter every 10 seconds. That to me sounds like a stress on the cpu at 10 second intervals. I can't think of anything within FSX itself that would cause a stutter or pause with that kind of consistancy.

If you use FSDT airports then you should update their addon manager or whatever its called. Old versions of this software is known to cause stuttering every xth second

Perhaps stutter is not the best wording...it really is like a slight (semi-slower motion) drag. I don't have a stutter that pops frames severely every 10 or so seconds. I might post a video that would do this justice...

 

I have tried everything in the book from basic vanilla, slider variations, cfg. mods, and stock cfg mods. I do believe this might be something I have to live with as I am almost certain it has to do with the refresh rate vs. fps bungle that FSX leaves us with. I am noticing more now due to flying around in Flight exclusively for the past 3 weeks where it is butter smooth at all times.

 

I have gone out into a field as well, with no scenery around, no air/ground traffic, or weather....same results. I will look into the config more as I have used *******' config tool on this one as a last resort.....I will give it a go this evening and see what happens.

 

I truly appreciate your efforts

 

-Danon

Danon,

 

Let us know what your results are, I am having the exact same issue you are describing!

 

Looking forward to hearing if you get it fixed!

 

-Aaron

hi dokelly07,

 

Have you tried to deactivate the anti aliasing ?

I could greatly reduce the 'stutters' with :

- Nick's setup for nvidia inspector, but with : no anti aliasing (put to Application controlled/off) and Force Vsync = off

- Antialiasing off in fsx.cfg

- *******' setup instructions with his great web tool (and with bufferPool = 150 000 000 and no Vsync Fix)

EDIT : - FPS to unlimited in fsx and no external FPS limiter

 

This is not the perfect solution for visuals but removing Antialiasing was a great improvement for me. I had a stutter every second (as you describe : like a slight - semi-slower motion - drag) particularly when my FPS was going above 30 (half the monitor refresh rate).

 

My setup : i7 3.8 Ghz, Nvidia 580GTX with last NVIDIA drivers -Win 7 64b - 8Gb RAM

 

 

hope it helps ;-)

 

 

Guillaume

I had this same "drag" thing with AA Multisample Transparency enabled. Disabled this option and the stutter gone.

GTX580 also, don't remember what driver.

I always find that locking my FPS to 30 when cruising gives the best results, but unlocking it when departing/approaching big areas can see good results. For example i was landing at KSEA with high settings, approaching with the city in the background and got about 20FPS when locked @ 30. Unlocked it and my FPS went up to 26/27.

 

Although i then exited the sim, started up the following day from KSEA with it unlocked and only got 22 haha.