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Image tearing in NVidia 8800GTX X-Plane 9 beta 13

#1 chudd

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Posts: 58
Joined: 13-November 06
Gender:Male
Location:Germany
OS:Linux

Posted 31 December 2007 - 01:38 AM

Hi,

I have an NVidia 8800 GTX running on my PC with the latest forceware drivers from NVidia (169.21 WHQL). On my setup (X-Plane 9 beta 13 running on Windows XP SP2) there is image tearing/flicker while panning around in 3-D cockpit mode and during steep turns. I understand this can be a symptom of problems with vertical sync and I was wondering if this could be symptom of vsync being turned off since beta 11. I tried overriding the vsync setting with an app specific profile in the NVidia control panel (i.e. vsync forced on) but it unfortunately made no difference.

Is this indeed a symptom of missing vsync? Does anyone have some suggestions on what else I can try?

System:
Windows XP SP2
Intel E6850 Core 2 Duo
4 GB RAM
NVidia 6600 GTX (792 MB VRAM)
169.21 WHQL driver (NVidia original)

X-Plane 9 beta 13
AA: 4x
Textures: extreme res
1600x1200 (but problem also with 1024x768)

Forests: overgrown
Detail distance: high
Roads and objects: tons
Reflections: complete

Frame rates vary but I have not seen them drop below 25 except on max objects, max trees, max roads, max everything.

If I can supply more info let me know.

Happy New Year!

This post has been edited by chudd: 31 December 2007 - 01:49 AM

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#2 tonyhart

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Posted 31 December 2007 - 11:40 AM

I get tearing while panning in 3D Panels also. I've been wondering the same thing. Currently on a top of the range iMac, but used to fly on a PC with a Ati X1800. Had the same things on both systems even after forcing VSync on the PC. My guess is that it is something intrinsic to the 3d panning that does this. Any insight from those in the know (Ben/Sergio) would be great.

Cheers dudes. Have a great New Year.

Tony.

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#3 built_to_last

Nothing lasts, but keep trying

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Posted 02 January 2008 - 03:52 AM

For some reason, tearing can also happen even if framerates are well below your monitor refresh rate. Some games demonstrate this behavior, and some do not... What's your FPS, and your monitor refresh rate?

I also think low fps like around 30 while monitor refresh rates is 60 could can cause tearing. Stuttering can trigger it too, even at low fps..

but so far, I haven't seen any games tear if the fps is in sync with monitor refresh rate like 60/60. Try lowering your settings and hopefully, it'll get 60 flat(depends on your monitor refresh rate) with vsync forced on. If fps is getting higher than your monitor refresh rate then vsync is not working.

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#4 chudd

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Location:Germany
OS:Linux

Posted 02 January 2008 - 03:53 PM

Thanks for the info. I'll have another look at it and see if the tearing gets better with lower settings as you suggest. Thanks for your answer.

Cheers

Rich

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#5 GranBichus

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OS:Windows

Posted 19 January 2008 - 09:36 PM

QUOTE(chudd @ Jan 2 2008, 04:53 PM) <{POST_SNAPBACK}>

Thanks for the info. I'll have another look at it and see if the tearing gets better with lower settings as you suggest. Thanks for your answer.

Cheers

Rich

Same tearing issue here but with an 8600 GT. Kinda suxs...

G.

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#6 yimmy149

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Posts: 17
Joined: 10-April 08
OS:Multiple (Windows/Mac)

Posted 10 April 2008 - 12:49 PM

I have 8800GT and would also like to be able to force vsync on - otherwise flying with TrackIR gives me headaches.

I've tried using nHancer to force it also, and it didn't seem to work. I can force vsync on MS FSX no problem.

-james

Mac Pro 8 x 2.8Ghz Xeon, 2GB, nv 8800 GT 512MB
CH USB Yoke & Pedals, TrackIR 3 6DOF
Win XP Pro 32-bit, X-Plane 9

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#7 Chris Gaeth

Hovercontrol Staff

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Posted 10 April 2008 - 01:57 PM

Try the 174.74 driver update. It eliminated this issue for me on my 8800GTS.

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