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I've been experiencing an issue, specifically a visual artifact in the sky (banding) as per the screenshots below. I've started observing this since v2.4 (no issues in v2.3 and earlier versions). The artifact tend to be more pronounced than what is depicted in the screenshots. The resolution is set to 1920x1080x32 in both Windows and P3Dv2. Any help to resolve this would be greatly appreciated. I should add that this happens with both default sky textures or with REX4 textures, but I'm convinced the problem isn't related to the textures.
Until recently, I never really had any serious issues with stutters (even small ones) and only very occasionally had very brief "freezing" on my triple-screen triple-pc XP10 setup. A friend had begun having issues and mentioned them to me, and sure enough, when I looked at MY setup, I was having the same problems but on a smaller scale. Happily, after a lot of experimentation, we discovered the 'solution' and are now enjoying the butter-smooth graphics our systems were built to deliver. So I share our 'solution' for the benefit of those who may be in a similar situation. Heart and Soul of our fix is simple: ROLL DRIVERS BACK to nVidia 337.88 WHQL (Windows Hardware Quality Lab Certified driver) May 26, 2014 available here. This step is VERY important. You do NOT have to uninstall your current nVidia drivers to install this older driver. Just download the file and run it. Tech explanation: Nvidia has been optimizing for Direct X, NOT OpenGL in their most-recent driver releases, the 377.88 driver appears to be the one best-suited to OpenGL which is what drives XPlane 10. Some folks in this thread have said that the newer 9-series cards from NVidia will require a NEWER driver than this one. The nVidia website will ask you to select your gpu series, then model, and 'search' and you will be presented with a list of compatible drivers. If you're having issues as described here, try selecting the oldest COMPATIBLE WHQL driver in the list for your specific graphics card. DO NOT select a 'beta' driver. Right click on any empty spot on your desktop and then left-click on nVidia CONTROL PANEL. Click on the left side of the nVidia control panel 3-D Settings Under the GLOBAL SETTINGS tab, there is a setting "Multi-Display/mixed GPU acceleration". If you use only ONE monitor for EACH PC, select Single PC performance mode. The very next setting is Power management mode, change to Prefer Maximum Performance. Near the bottom of the Global Settings window is Vertical Refresh Rate, select Adaptive (use half refresh rate). This will lock your frames at 30fps. Even though your video card (in our case nVidia GTX 770 and nVidia Titan) is capable of much much higher rates, because we both are using triple computers to drive 3 separate monitors, the goal is to have all three screens in perfect sync with no 'break apart' of the image. Setting frames to 30 on all 3 PCs results in optimal smoothness and synchronization between all three monitors. Finally: REPEAT these steps on each PC that is driving a monitor in your xPlane setup. Please rate this post if you found it helpful. This post is aimed at nVidia 7-series (and older) owners.