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Windows Explorer and DWM freeze and lag during wallpaper operations

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Zan Lynx
4 discussion posts
This might be related to this other topic:
https://www.displayfusion.com/Discussions/View/screen-freezing-caused-by-display-fusion/?ID=d3ed06c3-6f2b-432e-8976-d017e1a4355c

I don't have an exact timeline but I believe it started happening with Windows 10 1809. Whenever the wallpaper switches the mouse cursor starts to lag like it's on ice. Windows Explorer reloads its desktop icons (they flash all white then come back). Dragging a window loses the lock on the window and it freezes in place.

I'm using an Nvidia 1080 Ti and an Intel 5960x. There's no apparent peaks in CPU or GPU use during the lag.

I have my wallpapers set to load random from a NAS over a network share.
• Attachment [protected]: DisplayFusionDebugInfo.zip [27,933 bytes]
Nov 25, 2018  • #1
Keith Lammers (BFS)'s profile on WallpaperFusion.com
If you disable the "Use transitions when changing..." option in the DisplayFusion Desktop Wallpaper > Wallpaper Settings window, does that make any difference?
Nov 26, 2018  • #2
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Zan Lynx
4 discussion posts
Quote:
If you disable the "Use transitions when changing..." option in the DisplayFusion Desktop Wallpaper > Wallpaper Settings window, does that make any difference?


No it acts exactly the same way.
Nov 27, 2018  • #3
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Ok, thanks for trying that! I think you might be running into a CPU bug in the original Windows 10 1809 update (the one they pulled in late October). The system seems to come to a complete halt anytime something even slightly CPU intensive runs.

I had very similar issues to you, even without DisplayFusion running when I was on that build, and I actually ended up wiping my machine and re-installing 1803 :(
Nov 27, 2018  • #4
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Zan Lynx
4 discussion posts
Quote:
Ok, thanks for trying that! I think you might be running into a CPU bug in the original Windows 10 1809 update (the one they pulled in late October). The system seems to come to a complete halt anytime something even slightly CPU intensive runs.

I had very similar issues to you, even without DisplayFusion running when I was on that build, and I actually ended up wiping my machine and re-installing 1803 :(


I am not entirely sure what happened. I had done reboots before without fixing the problem so I don't think that's it. But there has been a Windows 1809 cumulative update and an Nvidia driver update, and I'm not seeing the problem anymore.
Dec 3, 2018  • #5
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Excellent, glad to hear it!
Dec 4, 2018  • #6
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