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Peter Bukewicz
14 discussion posts
Hi. Whenever I alt+tab there is a huge delay before it appears. I have no idea what the cause is. I'm using the latest beta (7.1.0 beta 3) and I've tried downgrading to the latest stable version and it still gives me the same issue. Please help it's killing me ><

Thanks! :)
Jan 7, 2015  • #1
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Would you be able to send over a debug log? Here are the steps:
  • On the Troubleshooting tab, change the Logging drop-down to "L1: Log Minimal"
  • Restart DisplayFusion
  • Open the Alt+Tab window
  • Send us the DisplayFusion.log and DebugInfo.html files (can be found by clicking the Open Log button on the Troubleshooting tab)
  • Disable debug logging after sending the log

Thanks!
Jan 10, 2015  • #2
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Peter Bukewicz
14 discussion posts
I've attached the log files :)
• Attachment: DebugInfo.html [147,205 bytes]
• Attachment: DisplayFusion.log [805,450 bytes]
Jan 12, 2015  • #3
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Peter Bukewicz
14 discussion posts
Any idea on what it can be? ???
Jan 13, 2015  • #4
Keith Lammers (BFS)'s profile on WallpaperFusion.com
There isn't anything out of the ordinary in the log. Does it make any difference as to which programs are running, and how many? Or is it just always slow, regardless?
Jan 15, 2015  • #5
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Peter Bukewicz
14 discussion posts
I'm usually running maybe 5 programs (that appear on the Alt+Tab Handler) at once. Those include Steam, World of Warcraft, Dolby Axon, foobar2000 and Google Chrome. I fix the slowing down by restarting but it gets unbearably slow towards the end of each day, so I have to keep restarting.

I tried disabling the DisplayFusion handler to see if it's just my computer slowing down, but the Windows one is instant, but slows down the moment I enable DisplayFusion.
Jan 16, 2015  • #6
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Ok, interesting that it slows down over time. When you say that restarting fixes it, are you restarting DisplayFusion, or the whole computer?
Jan 16, 2015  • #7
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Peter Bukewicz
14 discussion posts
The whole computer. Restarting DisplayFusion doesn't have any effect
Jan 17, 2015  • #8
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Ok, strange that just a DisplayFusion restart doesn't fix it up. When it starts to slow down, is the memory/CPU usage for DisplayFusion.exe or Explorer.exe high at all?
Jan 20, 2015  • #9
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NA28582
3 discussion posts
Any update on this? Im on Win 7 and Alt Tab is slow despite DF/PC reboot.
Jun 26, 2015  • #10
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NetMage
282 discussion posts
I am seeing a similar issue - Alt-Tab window is very slow (a few seconds) to appear.

With Alt-Tab handler disabled, speed is fast. Turning off show window text and show desktop window doesn't speed it up.

Since I primarily use Alt-Tab to pop to the next window, I have disabled it for now.
Jun 26, 2015  • #11
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NA28582
3 discussion posts
NetMage- how do you disable the Alt Tab handler?
Jul 2, 2015  • #12
Keith Lammers (BFS)'s profile on WallpaperFusion.com
@Peter and NetMage, which versions of Windows are you running on? My Alt+Tab Handler is instant on my main and test machines I have here.
Jul 2, 2015  • #13
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Aiken Drum
14 discussion posts
Mine also is slow, and I'm wondering if my difference is theirs. I run my windows 7 in as cut-down a visual style as possible. No Aero, no nothing. Looks like win2k, basically. Maybe try setting up a box or a VM and doing that to an instance of win7.
Jul 2, 2015  • #14
Keith Lammers (BFS)'s profile on WallpaperFusion.com
@NetMage and Peter, are you also running the Windows Classic theme?
Jul 3, 2015  • #15
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NA28582
3 discussion posts
Hi Keith- Im running Win 7 64bit and Windows Classic theme. If it matters, I have the following enabled/disabled per graphics: http://prntscr.com/7pwdit
Jul 7, 2015  • #16
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Yep, that seems to be it. When DWM is disabled (i.e. if you're using the Aero Basic or Windows Classic themes), it seems to be slow to generate the previews. Not sure what we can do here, but I've put it on our list for further investigation :)

Thanks!
Jul 7, 2015  • #17
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Aiken Drum
14 discussion posts
Thanks for the update, Keith! If nothing else, could they detect basic mode and let the previews fill asynchronously? Might be a decent/easy stopgap, depending on the code structure.
Jul 9, 2015  • #18
Keith Lammers (BFS)'s profile on WallpaperFusion.com
I'm not sure if that's possible, but we'll certainly investigate further to see if there's anything we can do :)
Jul 9, 2015  • #19
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NetMage
282 discussion posts
That must be my issue as well - I am not intentionally running Classic/Basic, but Win7 periodically complains about (graphics?) memory and drops me into basic mode. Hoping my new PC won't have the issue. Seems to have appeared with an nVidia update.
Jul 16, 2015  • #20
Keith Lammers (BFS)'s profile on WallpaperFusion.com
We've just released a new DisplayFusion beta version (http://www.displayfusion.com/Download/Beta/) and this issue should be all fixed up. Please let us know if you run into any trouble after updating.

Thanks!
Mar 30, 2016  • #21
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