Hi, Hoping I might be able to get a bit of advice.My system (Using 9800gtx+) runs into issues with FS2004 and FSX every time the FPS differ from 60. If the FPS are set to 30 or unlimited (or any other setting other than 60) strange skipping/stutters happen when moving or panning in the sim. Should the performance drop below 60fps the same issues happen. My system should easily be able to keep up with FS2004, however, should the FPS drop from 60, everything becomes very choppy.When the FPS are at a constant 60, everything is very smooth, no issues.I think this has something to do with Vsync and my LCD's refresh rate of 60HZ. If I set Vsync to off, FS2004 is smooth at varying FPS settings. However major texture tearing/zooming effects and scenery spikes occur with Vsync off, so its not really possible to use with Vsync off.I have tried triple buffering and changing graphics drivers (newer, older and latest), all have the same effect. No background programs or antivirus are running.I am thinking of swapping graphics cards and buying an ATI however I am not sure if they too have this same issue.I have tested FS2004 on my mates GTX260 system, and he suffers from the same issues.System specs are:Core i7 860Nvidia 9800gtx+4GB DDR3 ram.320GB SATA HDD.Windows Vista 64bit.Thank you very much for your help, I have been searching for a fix to this problem for a long time.

HelloYou are correct it is due to Vsync being off.You need to use vsync to avoid the tearing, ATI will be exactly the same, and probably worse as FSX really favours Nvidia cards

HiThanks for your reply. I have to have V Sync on to avoid the tearing of the textures. My issue is that I get very bad stutters/choppy movement should the fps drop below 60. Is there any way to fix this? Other programs/games like Call of Duty have no problems should the FPS drop below 60. The game play remains smooth when FPS are below 60. But when either FS2004 or FSX are ran, should the FPS drop below 60 the game play is choppy.Thanks for your help.

HelloWith Vsync on, when your machine can't maintain 60 FPS (not many can) the locked frames will drop back to 30.So lock at 30 fps and your machine will use the spare cpu cycles to get on with other things such as scenery and flight model.

Hi, Hoping I might be able to get a bit of advice.My system (Using 9800gtx+) runs into issues with FS2004 and FSX every time the FPS differ from 60. If the FPS are set to 30 or unlimited (or any other setting other than 60) strange skipping/stutters happen when moving or panning in the sim. Should the performance drop below 60fps the same issues happen. My system should easily be able to keep up with FS2004, however, should the FPS drop from 60, everything becomes very choppy.When the FPS are at a constant 60, everything is very smooth, no issues.I think this has something to do with Vsync and my LCD's refresh rate of 60HZ. If I set Vsync to off, FS2004 is smooth at varying FPS settings. However major texture tearing/zooming effects and scenery spikes occur with Vsync off, so its not really possible to use with Vsync off.I have tried triple buffering and changing graphics drivers (newer, older and latest), all have the same effect. No background programs or antivirus are running.I am thinking of swapping graphics cards and buying an ATI however I am not sure if they too have this same issue.I have tested FS2004 on my mates GTX260 system, and he suffers from the same issues.System specs are:Core i7 860Nvidia 9800gtx+4GB DDR3 ram.320GB SATA HDD.Windows Vista 64bit.Thank you very much for your help, I have been searching for a fix to this problem for a long time.

HiI have exactly the same problem as you describe. I use a Phenom II CPU with a GTX 260. If I lock the FPS at 60 my FS i very smooth. But if it drops to 59 or below I get the same problem as you have. If i lock the FPS to 30, it works fine for some seconds and then it gets choppy and stuttering for a second and so on. But I have no decrease in FPS. The FPS remains constant at 30 even when the stuttering begins.The only solution is locking the FPS at 60. At every other FPS setting I see a huge difference, even when locked at 59. I have reinstalled my computer about 5-10 times during one year I think and I always get the same problem. I have also tried an old ATI video card in my computer but still the same problem.When playing other games on my computer I don't have this problem. It's only in FS9 and FSX.Do everyone playing FS9 and FSX experience this problem or just a few of us?

Thought I would dig this up again.I am still suffering from this 60 FPS issue in both Sims. I am about ready to give up and buy an ATI.Could this be a Windows Vista issue, as I can't understand how more haven’t noticed this issue.Thanks for your help.

Maybe it is time to reinstall the O/S.

I tried reinstalling but it didn't fix the problem.When you guys run flight sim, can you notice any difference in the smoothness of panning when FPS are at 60 and when frames are at say 40?Thanks for your help.

Old thread and I remember you had the same issue back in February as well (along with a user named Hardell).Since then I have reinstalled FS2004 (and decided to stay with it for long now but that is another story). At first I had Vsync on and locked to 59. Stayed supersmooth as long as framerates maintained 59. As soon as I got into some heavier scenery (lots of trees, dusk and several storm layers low and close to the ground) fps dropped to around 40 and encountered a similar choppiness you describe. It was not bad yet after the smoothness definitely noticeable.What I did is I forced Vsync off through Nhancer in my separately created Nhancer profile and adjusted unlimited framerates in FS9 Settings. While if Vsync was forced off and had a framerate limit set I encountered image tearing however as soon as framerates were set to unlimited the tearing disappeared and even at 40 fps it became just as smooth as at 90-120 what I now get with regular scenery.Maybe you could also try this. So the change is Vsync off + unlimited FPS. Result is smooth at 120 and same smoothness at 40. Rarely go below this.(I have an I7-940 and a GTX-285 along with XP 32bit)Cheers,Alex

I get this stuttering too. Seems to be after upgrading to a GTX460 card as I didn't have it on my old ATI 4870. Alex I will try your Vsync off + unlimited FPS recommendation. If it cures the problem you will be my favourite forum user! :Party:Andy S

Sure let me know how it goes.

You can try the FPS limiter tool as well, it is a simple .bat file that you set to 30 FPS while in FSX the FPS are set to unlimited. Make sure that your desktop and FSX resolution are identical and your monitor refresh rate is 60Hz (double your FPS setting)Have a look at adding under [Graphics] the HIGHMEMFIX=1 in the FSX.CFGThe sim runs extremely smooth with the PMDG JS41, 747X, MD11 and the CaptainSim products while using ActiveSky combined with REx 4096x4096 HD textures.

Just tried FS again and no change sadly. -_- Andy S

In what ways is there no change? Do you have tearing with vsync off, stutters or both?I am using the old and trusty 182.50 driver and Nhancer 2.4.5 set up by this guide: http://forums1.avsim.net/index.php?autocom=tutorials&article=32

Just tried FS again and no change sadly. -_- Andy S

In what ways is there no change? Do you have tearing with vsync off, stutters or both?I am using the old and trusty 182.50 driver and Nhancer 2.4.5 set up by this guide: http://forums1.avsim.net/index.php?autocom=tutorials&article=32

Hi Andy and Axel - Now I really feel like I am butting in, neither of you replied to my post above.I have read the thread and it seems like old nVidia drivers are being used combined with nHancer. Have either of you tried the newest drivers combined with nVidia Inspector?I cannot tell exactly what kind of systems you have unless I read through the entire thread once again (setup could be listed in your sig for best help\results) but it seems that you are using a non 64 bit OS and are running on non Vista or Win7 systems. You won't get much out of FSX unless you install the latest DirectX version which has everything from DX11 down - No need to worry about DX11 drivers becasue FSX is not set to run those but it will improve how FSX runs.Also when installing new drivers how are you performing the function? Do you download and install over the new drivers? If you are interested I can provide a link on how to set nVidia Inspecor up and it only takes a couple of minutes.