Alt-Tab window preview scaling issue


sss222

Member
Local time
11:31 PM
Posts
1
OS
Windows 11 23H2
Hey there! First time poster here.

Quite often when I alt-tab I notice that the window preview does not match the aspect ratio of the window itself (the normal windows behaviour is that the alt-tab previews do indeed match, you can resize the window as much as you want, then alt-tab and see). Aswell as the aspect ratio being off the text is usually squished up together. This is not meant to happen.

I have attached a youtube video for you to be able to see, see bottom of the post.

The first time this happened I assumed it was just a weird Windows one-off bug, so I left it. The next few times I noticed it, I booted into safe mode (with networking) and eventually the bug came back. This made me think it was a Windows/Hardware issue because safe mode disables all 3rd party apps/drivers (including the gpu one, as my screen was stuck at 60hz with the basic display driver).
I then grabbed the latest stable 23h2 iso from uup dump and installed via rufus usb, and the same issue happened after 4-5 hours.

Hmmm, that's strange, I've had this machine for about 9 months now and not had any driver timeouts or memory related crashes, its stable 24/7, I mainly use it for gaming, surely if I had a GPU/Memory problem I would have issues in high intensity workloads (like 1440p gaming), and not while dragging windows around the desktop?

I then ran Memtest overnight and GPU stress tested for hours on end, no issues whatsoever. Replaced DP cable. GPU isn't daisy chained. Ram is dual channel. CPU is cooler than my card with the wonderful peerless assassin.

For what its worth I had had this happen on Firefox, Command promt and IntelliJ IDE. There is a small chance it happens more often AFTER a gaming session, but I can't prove that in any way (as you can see in the video I did not have a game open nor had I just finished playing, so it can definitely happen without any sufficient GPU workload prior).

Its not a major issue but I am worried it might progress into something worse (if its hardware related) and the fact it survived a windows nuke beats me. Also can't find any others with this online, I think if it was a core issue in Windows then others would 100% be experiencing it too.

The only "fixes" I know are to restart the program, or to restart Explorer.exe, however both of these solutions hint to a software based problem (its usually not possible to fix hardware faults with software but sofware can fix sofware bugs much more often), if it truly was my GPU/Memory surely this wouldn't work?

Any ideas?
Thanks for reading!

YT VID:
 
Windows Build/Version
22631.5116

My Computer

System One

  • OS
    Windows 11 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Ryzen 7 5800X3D
    Motherboard
    B550 MSI
    Memory
    32GB 3200mhz DDR4
    Graphics Card(s)
    7800XT Gigabyte
    Sound Card
    -
    Monitor(s) Displays
    27in 1440p 170hz Gigabyte
    Screen Resolution
    1440p
    Hard Drives
    2tb gen4 NVME Crucial
    PSU
    Corsair 750rmx
    Case
    MSI Forge 100r
    Cooling
    Peerless assassin + 5x case fans 120mm

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