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User Image
detkloo
8 discussion posts
Hi,

I'm having some generic slow performance on DF, which i unceremoniously worked around by disabling global application hooks as problem feels too unspecified to easily troubleshoot. (slow taskbar window peek, DF itself opening/navigating slow, general feeling of sluggish system)

But the side effect is that alt+tab is only showing main monitor windows when DF alt+tab functionality is enabled OR disabled (looks as if DF is handling it even in disabled state in settings.)

Only shutting down DF seems to return windows own alt+tab handler with full functionality. So any way to keep DF from touching alt tab?
Nov 8, 2021  • #1
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hello,

After disabling Alt+Tab in the DisplayFusion Settings, can you set the Taskbar Mode to "Windows taskbar shows all windows, DisplayFusion shows relevant windows", and see if the issue persists?

Thanks!
Nov 8, 2021  • #2
User Image
detkloo
8 discussion posts
That did the trick, thanks a lot! :)

Though unfortunate side effect is that now main monitor is showing every monitors tray icons as duplicates, but at least its workable
Nov 8, 2021 (modified Nov 9, 2021)  • #3
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hello,

We'll definitely want to fix up that performance issue, which should fix up your alt tab issues as well when you re-enable application hooks. When your system slows down, if you open Task Manager > Processes, is anything high in usage?

Thanks!
Nov 9, 2021  • #4
User Image
detkloo
8 discussion posts
usually firefox (twitch/youtube) with 10-20% and second is Displayfusion with 3-10%, but its hard to pinpoint what is triggering the jump in cpu load, as i might just be on the desktop doing nothing.

Disabling Application hooks helps somewhat, but still can go up to high utilization (i7-8700k), running as low priority process changes nothing
Nov 9, 2021  • #5
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hello,

Interesting, if you re-enable those hooks, can you open the DisplayFusion Settings window and disable some of the settings listed (Triggers, Multi-Monitor Taskbars, Screen Saver, etc.) the next time the issue happens, and see if anything in particular fixes it up?

Thanks!
Nov 10, 2021  • #6
User Image
detkloo
8 discussion posts
Fresh launch all hooks re-enabled: DF cpu 0,4% & 71,4 MB ram

Jumping between active windows by clicking on multi monitor taskbars: DF cpu spikes to 5% temporarily, but drops back to 0,4%
t+90min DF cpu 1,3% 95,1 MB ram
t+2h DF cpu jumping between 1,4-2,2%,
t+4h DF cpu 4,7-5,2% 261 MB ram, same programs open. Average utilization seemed to increase gradually over time

starting settings changes
screen saver, already off
triggers, already off
key combinations, disabled no change
Multi-monitor taskbar, disabled -> drop down to 2% cpu
maximized window dragging between monitors, disabled -> spike up to 4,9-6,1% and stay there
maximized window dragging between monitors, re-enable -> marginally lower 4,5-5,5% (coincidental?)

edit:9 hours later now closing to 10% cpu load while i was out and computer idle, so definitely increasing over time
Nov 11, 2021 (modified Nov 11, 2021)  • #7
User Image
detkloo
8 discussion posts
Tried running with multi monitor taskbar disabled and all other features enabled.

stable 0,1% cpu load, so seems like culprit is clear
Nov 14, 2021  • #8
Keith Lammers (BFS)'s profile on WallpaperFusion.com
Could you try updating to the latest beta, then when the CPU usage is high, send us a new copy of the troubleshooting info? (steps below)

Could you send me a copy of your troubleshooting info? Here are the steps:
  • Open the Settings > Troubleshooting tab
  • Click the "Export Info to File" button
  • Reply with the file attached

Thanks!
Nov 15, 2021  • #9
User Image
detkloo
8 discussion posts
Looks like I'm already running the latest beta and luckily i already exported the troubleshooting details when i was testing the earlier high cpu situation
• Attachment [protected]: DisplayFusionDebugInfo.zip [83,263 bytes]
Nov 16, 2021  • #10
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hello,

Thanks for sending that over, everything seems fine there. Could you send us in a help request via the Help > Contact us form?

Thanks!
Nov 23, 2021  • #11
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Globe Spy
13 discussion posts
This issues still persists with in Win 11 using V10 of DF (non beta).
Using the steps provided it resolves the slow Alt-Tabbing.
Thought this might have been resolved since this is an old thread.
Jul 12, 2023  • #12
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Can you update to our latest beta and let me know if the issue persists? Here's the link: https://www.displayfusion.com/Download/Beta/
Jul 12, 2023  • #13
User Image
detkloo
8 discussion posts
Haven't been able to use this for a while but updated to the latest beta to test just for you guys :)

Alt tab in general seems a bit better, but if you mouse-over the alt tab preview window CPU utilization spikes from 0,3% to 11% (for comparison i'm playing Factorio multiplayer right now, and its only hitting 3-4% utilization)

moving mouse or right clicking over multi monitor taskbars also hits CPU with 6-8% extra cpu load
Jul 12, 2023  • #14
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Thanks for testing it out! Are you grabbing those numbers from the Task Manager > Details tab?

Do you notice any performance degradation?
Jul 12, 2023  • #15
User Image
detkloo
8 discussion posts
Yeah, taskmanager & others (attached). Currently I don't really have any workflows where I could naturally get the CPU closer to becoming a bottleneck to try to catch any impact systemwide, so I can only see it as #1 resource user with a decent margin in taskmanager any time I interact with it.

I've attached what little I can catch with procmon, resmon and perfmon.

Maybe globe spy37266 has more input as he is currently having the issue
• Attachment [protected]: resmon.jpg [199,635 bytes]
• Attachment [protected]: tests.jpg [205,967 bytes]
Jul 12, 2023  • #16
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