picom
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window resizing is slow/stuttering
Platform
arch btw
GPU, drivers, and screen setup
intel modesetting 5120x1440+0+0 & 1920x1080+5120+360
Environment
i3 version 4.20.1
picom version
Diagnostics
**Version:** vgit-7e568Extensions:
- Shape: Yes
- XRandR: Yes
- Present: Present
Misc:
- Use Overlay: No (Another compositor is already running)
- Config file used: /home/tobias/.config/picom.conf
Drivers (inaccurate):
modesetting
Backend: glx
- Driver vendors:
- GLX: Mesa Project and SGI
- GL: Intel
- GL renderer: Mesa Intel(R) UHD Graphics (CML GT2)
- Accelerated: 1
Configuration:
Configuration file
# Shadow
shadow = false;
shadow-radius = 9;
shadow-offset-x = -9;
shadow-offset-y = -9;
shadow-opacity = 0.5;
shadow-exclude = [];
shadow-ignore-shaped = false;
# Fading
fading = false;
fade-delta = 10;
fade-in-step = 0.10;
fade-out-step = 0.09;
fade-exclude = [ ];
#no-fading-openclose = true;
# Other
backend = "glx"
glx-no-stencil = true;
glx-no-rebind-pixmap = true;
use-damage = true;
vsync = true;
# Opacity
#inactive-opacity = 0.99;
#active-opacity = 0.99;
opacity-rule = [
# "100:fullscreen",
# "99:I3_FLOATING_WINDOW@:c",
]
# Window type settings
wintypes:
{
tooltip = { fade = true; shadow = false; opacity = 0.98; };
toolbar = { fade = true; shadow = false; opacity = 0.98; };
normal = { fade = true; shadow = true; opacity = false; };
menu = { fade = true; shadow = false; opacity = 0.98; };
dialog = { fade = true; shadow = true; opacity = 0.98; };
popup_menu = { fade = true; shadow = true; opacity = 0.98; };
notification = { fade = true; shadow = true; full-shadow = true; opacity = 0.99; };
dock = { fade = false; shadow = true; opacity = false; };
};
Steps of reproduction
resize a floating window
Expected behavior
smooth
Current Behavior
stuttering
I'm using --experimental-backends. Tell me what i can do to help you solve this problem. :)

i've tested:
- xrender backend
- glx backend
- with and without
--experimental-backends - shadow off and on
all behave the same in this regard.
- Same problem
- AMD 6000 Series GPU