I observed the described problems since really long time (on Vist64, Win7b64, and Win7RC64 ) and finally found the solution for me yesterday. Meanwhile I have made several flights with the 747 @ day, night , heavy traffic, 4xspeed, switching to map and back, changing scenery and weather ... all those actions which made the texture mess up.What I did:I rolled back to the initial nvidia driver (181.72) which came with W764RC and disabled automatic driver install.Uninstalled nhancer 2.5 reinstalled version 2.45 and applied the settings from NickN.Uninstalled/Reinstalled PMDG747X Three fsx.cfg tweaks: [Jobscheduler] affinitymask=15; [bufferpools] poolsize=200000000; [Display] TEXTURE_BANDWIDTH_MULT=70.I'm really happy now, because I nearly had stopped flying the jumbo... Now it's airborne again :-)my specs:[email protected], 6G OCZ Platin (1600), Zotac Nvidia 285gtx, Creative SB X-fi (6.0.1.1368), w764RC on C (raptor 150G) fsx acc on D (velociraptor 300).Maybe this helps somebody.CheersHarry Martin

Bryn: I don't have the setting you mention in my FSX.CFG file.Harry: Good luck with your fix. It sounds like one of the fixes I thought I'd stumbled on, only for it to fall apart after some days for no apparent reason. So I hope it "sticks" for you.Generally: installing Alchemy seems to have fixed the missing texture problem, but it has created a few problems of its own. The first is that the sound tends to "boom" except on particular settings: I've found that 24-bit, 96000Hz seems to work best. The second problem is more intractable: the PMDG voices don't play, and I can't find a way around this one.So back to 8000Hz sound quality without Alchemy for me. That's an acceptable compromise to go on using the MD-11.Anyway, the Alchemy experiment has satisfied me that this problem has to do with the way the Vista audio model interacts with FSX under heavy load, and not specifically PMDG.Tim

Bryn: I don't have the setting you mention in my FSX.CFG file.Harry: Good luck with your fix. It sounds like one of the fixes I thought I'd stumbled on, only for it to fall apart after some days for no apparent reason. So I hope it "sticks" for you.Generally: installing Alchemy seems to have fixed the missing texture problem, but it has created a few problems of its own. The first is that the sound tends to "boom" except on particular settings: I've found that 24-bit, 96000Hz seems to work best. The second problem is more intractable: the PMDG voices don't play, and I can't find a way around this one.So back to 8000Hz sound quality without Alchemy for me. That's an acceptable compromise to go on using the MD-11.Anyway, the Alchemy experiment has satisfied me that this problem has to do with the way the Vista audio model interacts with FSX under heavy load, and not specifically PMDG.Tim

Bryn: I don't have that setting in my cfg as well.Tim,Sorry to hear about the Alchemy situation, I was hoping that might have been a way for those who don't have the lower sound options available to obtain those lower settings. So, I take it that you are abandoning that approach? I can't locate my MB disk, so I wasn't even able to determine if those drivers were on it, not that it really matters now.It appears that my original 8000Hz experiment is still working for us. I have tried 11025Hz and even 16000Hz with success, so you might want to try those settings as well. I actually have not had any corruption, missing textures or artifacting at the 16000Hz setting. Funny, all the hours we spent looking for the fix and now after I find it all I do is try to break it!!! (but I haven't been able to :( :( :( )Now, if we could only locate a driver that will work with different chipsets that will unlock the magic settings...Jay

I observed the described problems since really long time (on Vist64, Win7b64, and Win7RC64 ) and finally found the solution for me yesterday. Meanwhile I have made several flights with the 747 @ day, night , heavy traffic, 4xspeed, switching to map and back, changing scenery and weather ... all those actions which made the texture mess up.What I did:I rolled back to the initial nvidia driver (181.72) which came with W764RC and disabled automatic driver install.Uninstalled nhancer 2.5 reinstalled version 2.45 and applied the settings from NickN.Uninstalled/Reinstalled PMDG747X Three fsx.cfg tweaks: [Jobscheduler] affinitymask=15; [bufferpools] poolsize=200000000; [Display] TEXTURE_BANDWIDTH_MULT=70.I'm really happy now, because I nearly had stopped flying the jumbo... Now it's airborne again :-)my specs:[email protected], 6G OCZ Platin (1600), Zotac Nvidia 285gtx, Creative SB X-fi (6.0.1.1368), w764RC on C (raptor 150G) fsx acc on D (velociraptor 300).Maybe this helps somebody.CheersHarry Martin

Harry,I've tried that before, and many. many, many other twists of that approach and none of them worked for me. The ONLY method that is working for me is to reduce the sound quality settings via the Vista control panel (not sure about W7). You must have the option to get to 16 bit, 16000Hz or lower for this fix to work reliably.Happy it works for you though!Regards,Jay

Hi,Very interesting thread this one. As I mentioned earlier in this thread I thought upgrading to the 185.85 Nvidia drivers solved the problem for me. But I cheered to early (again)... Anyway, I have had this problem also on multiple addon's like CS 757, FT A320, PMDG MD-11 etc. Only the Wilco E-jet works fine for me in DX9 mode. In DX10 preview everything runs just fine with every addon, but then I am forced to fly only during daytime houres as a lot of addon sceneries don't show night textures in DX10 mode. I tried every tweak from about every forum, but no result. I have noticed however that reducing my sound quality to CD-player level has given me a bit more breathing space than before. But no success in escaping the black textures, only now they appear at about V1 instead of on the tarmac... :( So indeed sound quality seems to be the long lost treasure. Unfortunately I can't reduce the quality any lower under Vista. I'm really hoping that some IT genius will show up in this thread to point out a workaround. For now I'm left with two more options I would like to try (once I get the time). 1. Install Cleanmem, some threads promise brilliant results, other threads make complete garbage of it. But anyway, it's freeware, so nothing lost in giving it a try. I'm not getting my hopes up too high as I'm not sure whether this is a memory related issue.2. Uninstall my soundcard and try running on the built in sound from my motherboard. But this one seems rather drastic and useless as I was always told that a decent sound card gives a framerate boost.oh and...3. Hoping for the definite solution popping up in this forum, or in a new sound- and or videodriver to be released in the future...Kind regards,NicoMy systemIntel C2D E6700Nvidia Geforce 9400 GT 1GBSoundblaster Audigy4 GB DDR-2 RAMWindows Vista 32bits

Hi all,Sorry, I forgot something. I reread this whole topic tonight, and found in post #43 a possible solution mentioned by member Jay.It said something about running FSX in Windows XP (Service pack 2) compatibility mode and changing some settings through the Nvidia control panel. First results were promissing but than no further comments were given on this and the next possible solution mentioned was the "lower audio quality settings"-solution. Has anyone tried further testing the first solution? And was someone able to reproduce the texture problem using these settings? Just asking because this is a solution I would also be able to try, opposing to the audio quality settings one.Thanks for any help/advice! :( Kind regards,Nico

Hi all,Sorry, I forgot something. I reread this whole topic tonight, and found in post #43 a possible solution mentioned by member Jay.It said something about running FSX in Windows XP (Service pack 2) compatibility mode and changing some settings through the Nvidia control panel. First results were promissing but than no further comments were given on this and the next possible solution mentioned was the "lower audio quality settings"-solution. Has anyone tried further testing the first solution? And was someone able to reproduce the texture problem using these settings? Just asking because this is a solution I would also be able to try, opposing to the audio quality settings one.Thanks for any help/advice! :( Kind regards,Nico

Nico,Feel free to try that method, you may have better luck than I did with it. I originally reported some apparant success, as it turned out the same problems happened again. Honestly, the ONLY real success I've had, and I've been trying like hell to break it, is using the reduced sound quality settings. I can say with confidence that when my audio settings are at default (16 bit, 44,100 Hz) I can produce a black screen, graphics corruption or transparent texture issue 100% of time. When I reduce this setting to 16 bit, 16,000Hz or below I can not produce ANY issue no matter what I do. Zero. Now, I understand that you aren't able to lower your settings due to having a different audio chipset on your soundcard, however, my suggestion would be to at least try it without the soundcard, using the on-board chipset. It may turn out that you STILL aren't able to lower the settings because you may have the 'wrong' chipset on your motherboard, but, what the hay, why not give it go? BTW, my chipset is reported by Everest to be an Analog Devices AD2000B High Definition Audio Controller, using Microsoft Driver v.6.0.6002.16659 Dated 6/21/2006. Not sure if that matters, but there you go...Good LuckJay

I can't use the md11 anymore :S also, i can't reduce the sound quality that much, my sound blaster does not allow 16 bit :S

Hi Jay,Thanks again for the info. I've just sent an e-mail to Realtek support to ask them for help in turning down my audio quality to 16bit 16000Hz. If they answer I'll post their solution here for people experiencing the same problem.If they don't answer, I'm going to check whether your chipset can be installed on my system. We're so close to resolving this issue now, I'm not willing to give up! :( Kind regards,NicoBtw: In rereading this topic, I found some posts of people attacking PMDG for this. I think it's safe to say that this is NOT a PMDG related issue as I've encountered the issue also with other complex addons. I found the folks at PMDG always splendid in their prepardeness to help their customers, even in adding their knowledge and support to this topic. The people I'm less satisfied with are the management at Microsoft, but that's another discussion.

Hi,it would be great if lowering the sound quality would help. I was just about to write an email to Realtek myself. I hope it isn

Btw: In rereading this topic, I found some posts of people attacking PMDG for this. I think it's safe to say that this is NOT a PMDG related issue as I've encountered the issue also with other complex addons. I found the folks at PMDG always splendid in their prepardeness to help their customers, even in adding their knowledge and support to this topic. The people I'm less satisfied with are the management at Microsoft, but that's another discussion.

Nico,Amen to that. I agree with you 100%.Let us know if you hear anything back from RealTek. The only other option I was thinking about would be to look at any 3rd party sound drivers for your chipset. There might be something available that could open up those other quality settings. I can't do it because I don't have that kind of chipset, but if you have some time it might be worth it to look.Did you try it with the on-board audio yet?Jay

Hi Jay,I'm currently only using my onboard audio chipset by Realtek. But no success, I still can't lower my settings to 16 bit 16000Hz. I've been looking all around the internet for an audio driver or audio codec (don't really know the difference) which supports 16000 Hz or even 8000 Hz sample rate output, but haven't found one yet. No answer from Realtek either... :( Kind regards,Nico

Hello everyone..I have a quadcore q6600 oc to 3.6, 4870x2, with a soundblaster xi-fi card. Recently bought the PMDG 747, also have Captain sim 575, nice planes but i was getting a lot of fatal errors with fsx whilst using these 2 planes. I would also get black screens in the preview plane window and would have to restart fsx. Anyway i took out my soundblaster card and used my onboard realtek sound, I was still getting frequent crashes. After some trial and error i then enabled DTS 5.1 in my Realtek options, I have an amp connected and all my gear runs through it. The PC is connected to the amp with an optical cable. Been playing FSX for 3 days now with both the PMDG 747 and CS 757, using both FMCs, switching views in both 2d and virtual cockpit, i can even hit the windows key to minimize FSX and go on the internet and then switch back into FSX and have no problems... I think you guys are right in saying its a sound issue, thing is i know not all Realtek onboard cards have DTS options. Im hoping its solved my problem, fingers crossed. Like i said 3 days without a single error or crash. If any of you guys have a similar setup maybe you could try it and see how you go. Heres Hoping.....Laters....

Hi Lynch,Since I'm unable to find a Realtek driver which supports a 16bit 8kHz sample rate and Realtek won't answer my emails, could you tell me where to enable the DTS in Vista?Thanks in advance!Kind regards,Nico

I had no problems for what seemed to be ages, but I started having the black screen or graphics corruption/ALT-TAB issue recently--dunno when, but possibly after my last nVidia driver update. After having AF at 16x (via nHancer), I just discovered yesterday that throttling back to 12x or 8x has eliminated the graphics corruption.YMMV, of course.Oh, my specs, briefly: HP Pavilion Elite (Q9300) with Vista 64 and 8 gigs RAM / nVidia 9800 GT / driver version 185.85