For those of you with ATI 5800 series cards for which Vsync will not enable in either the ATI CCC with the option "Wait for Vertical Refresh" always on or using Ray Adam's ATI Tray Tools (this has worked for some) the following worked for me. My OS is Win 7 x64, which is where many users are reporting problems. I just upgraded from an 8800GT to the 5850 and found the texture tearing almost a showstopper. Steps:1) Download and install RivaTuner. The version I have is v2.24 - I believe that's the latest.2) Open the RivaTuner folder, on default installation it is in the Program Files (x86) directory.3) In the RivaTuner folder, open Tools, and look for D3DOverrider. Open that application - it may minimize into the apps tray accessed by the upward arrow (triangle) on the taskbar.4) Choose the options "Start with Windows", "Global" applications properties, and Vsync "On". I also have triple buffering "on" and application detection level set at "Medium". These last two settings are probably not essential, but they work for me.Following these steps on my system, Vsync is now on in FSX, with no more texture tearin. There is no significant impact on frames rates, which are much higher than for the 8800GT. The solution is not perfect because a few minor annoyances resulted, which to me are small compared to the Vsync problem. They are:1) When starting FSX and at certain other times an alert "chime" played because of the overriding. This has a simple solution. Go into the control panel "Personalization" option and select "Change Sound Effects". You can then change sounds, selecting "None" for the offending option. I honestly can't remember which one, it may have been "Asterisk", but with a little experimentation you'll find the right one to switch off.2) When opening FSX to the initial setup page, the frame where I used to see the default Trike is now black. Honestly, I don't really care about this, so I'm not going to worry about a fix.3) The only other issue I've found is that when opening a pop up (like the GPS, or initially opening the ATC window) there is a very momentary flash to black screen, which immediately returns to the regular view. Not perfect, then, but far better than having the Vsync problem, hence the 90%. I've only tested this in virtual cockpit mode, and I use TrackIR 5. Of course, everyone's system is different, so it may not work for all, but it may help some.

Thank you! This works for me.If you set "triple buffering" to off, then there is no black screen.regards

Part 3 where the screen flickers will really start to get on your nerves it did me.....The solution... unistall Win 7/Vista move to XP 64 bit have been soooo happy as V Sync works perfectly with CCC.....Hamish

Yes, reverting to XP x64 is an option, albeit it's both a resource and time investment that I suspect many users will not want to make. Of course, the best solution would be for ATI to release a driver in which Vsync enables properly in Win 7 and Vista OS (I think problems have been reported in the latter, too) through the ATI CCC. I've filed a problem report with ATI, but am not holding my breath. This fix works fine for most of my flying purposes in FSX, which are largely GA/VFR flights, for example in the new PNW scenery, which is fantastic. I still use FS9 for LDS 767, etc., or heavy IFR. The switch from 8800GT to the 5850 has added 10+ fps (conservative estimate) in a couple of test flights I've run. Most sliders are set at max, and my sense is that the clouds are more realistic. I'm a RW pilot and am pretty particular on visuals. For others with ATI cards who may want to test this approach, the sound solution is even easier than originally posted. In D3DOverrider, there is an option on the bottom of the page (speaker symbol) that allows you to disable the sound alert. There is another option to disable event logging to RivaTuner, which for most users will be unnecessary. In fact, there is no need to run RivaTuner at all, as all that is needed is the D3DOverrider tool.Incidentally, in a little more testing with AA filtering options I'm not seeing either problems 2) or 3), i.e., it's a 100% fix. Right now I'm running 8x AA with the box filter and 16x AF. I'll do some more testing, but the bottom line is for other users of ATI cards with a Vsync problem the use of D3DOverrider is probably worth a shot.

I've been setting up a friends rig with fsx and the 5870 card. I can fix vsync with d3doverrider, but when I try and setup the enb mod fsx crashes.. has anyone else managed to use this mod with d3doverrider on the 58xx cards?I think it makes a hugh difference to the simvisuals and runs great on my GTX260. Thankstriton

Yes it works! I've just tried it on my PC (see spec below) and it works perfectly. No flashing black screen or any other funny side effects just FSX running perfectly with no screen tearing.100% fix! Thanks alot for sharing this guys.I left triple buffering off.

After a bit more testing I've found that I am getting problem 3 (when opening a 2D pop up there is a very momentary flash to black screen).Dolsurs, what exact AA filtering settings do you use to stop this happening and do you use the Catalyst Control Centre for these settings?

Does the latest ATI Tray Tool version also content this D3DOverrider?? I am not sure, but I think I have found this setting somewhere in the "special settings" tab. I don't have ATT installed right now, so I cannot check it. Anyone knows if this will work also with latest ATI Tray Tool ?

Pegasus1,There is a setting in ATI Tray Tools under 3D called Wait for Vertical Sync that you can set to always on. However, ATI Tray Tools may not install properly on your OS, as it uses unsigned drivers. Although there are tweaks to get around this, some users have reported problems with the proposed fixes.

That's why uninstalled ATT again. Because after a reboot, my system said that ATT does not function properly as they weren't installed with admin accoun. But I used admin account when installing them. However, I uninstalled ATI Tray Tools. So this VSync-Force tweak will work with D3DOverrider tool from Rivatuner?

Does the latest ATI Tray Tool version also content this D3DOverrider?? I am not sure, but I think I have found this setting somewhere in the "special settings" tab. I don't have ATT installed right now, so I cannot check it. Anyone knows if this will work also with latest ATI Tray Tool ?

You can force vsync on Vista/7 using ATT but you cannot use "always on" mode since it has no effect. You must create a profile for FSX and then activate the "vista workaround mode" for vsync in the settings for that profile. It does however use exactly the same trick as d3doverrider to force vsync. This means it has the same drawbacks, i.e. the flashing screens.

******* (Bojote) has found a COMPLETE FIX for the ATI vsync/flashing screens problem:Bojote Vsync Fix!No more need for D3DOverrider!Major V