GNOME Bugzilla – Bug 774378
Poor performance when resizing GTK/Wayland applications on high resolution screen
Last modified: 2016-11-17 10:19:08 UTC
On my laptop with a high dpi screen (3200x1800, 13.3"), Intel m3-6y30 processor, and 8gb ram and I am encountering significant lag and poor performance when GTK3/Wayland application windows are resized or content layout is otherwise updated. Often, several hundred ms pass between the cessation of a drag and the resize / reflow occurring. This video shows the issue: https://youtu.be/YyVKw4CTq6I Non GTK3 / Wayland applications (i.e. xwayland applications) appear to behave normally with acceptable performance. When using the X11 backend as well, this behavior is not observed. The gnome-shell itself is quite smooth (overview animation, scrolling etc). Further, reducing the resolution to 2048 x 1152 or lower completely alleviates the problem. At resolutions higher than this, it is very evident. I am running Arch Linux with the 4.8.7 kernel, and gnome 3.22.2. This problem was present in 3.20 as well
Thanks for taking the time to report this. This particular bug has already been reported into our bug tracking system, but we are happy to tell you that the problem has already been fixed in the code repository. *** This bug has been marked as a duplicate of bug 772075 ***
Excellent! Thank you! Any idea which release this will make it's way into? 3.24 or is there another 3.22.x in the pipeline?
There won't be a GTK+ 3.24: https://blog.gtk.org/2016/09/01/versioning-and-long-term-stability-promise-in-gtk/ A new GTK+ 3.22 release will be available in the future, with the fix for bug 772075.