Main window is sluggish and unresponsive when being moved or resized

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When the FRV main window is moved (via dragging, or by window managers), it takes 2-3 seconds to start moving. Once the move is finished, the GUI is completely unresponsive for another 2-3 seconds before I can interact with it again. It gets quite annoying since I use a tiling window manager that moves windows around.
Something I noticed is that when resizing a window, the issue only happens when resizing from the top or left edges of the window. Resizing from the right or bottom edges doesn't cause the GUI to become unresponsive.
I've tried both OpenGL and DirectX11 engines.

  • Operating system/version
    • Edition    Windows 11 Pro
    • Version    25H2
    • Installed on    ‎5/‎27/‎2025
    • OS build    26200.8655
    • Experience    Windows Feature Experience Pack 1000.26100.315.0
  • General Hardware specs: AMD Ryzen 9 3900X, NVIDIA RTX 3080 Ti (12GB VRAM), 32GB RAM
  • FastRawViewer version: 2.0.11 Release Build 2088

 

Since we have never received such complaints from other users: could you please test with the standard Windows window manager?

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Alex Tutubalin/FastRawViewer team

The issue persists even without a separate window manager (just native Windows).

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