[Gimp-user] Layer groups seriously broken - huge resource hog

[BWK <forums gimpusers com>]

Whilst I have played with settings recently to use an SSD partition for swap,
this answer still doesn't address why the disk space usage is wasteful. The
extra space not being used for anything worthwhile will fill up my disk much
faster.

> Layers groups are not meant to keep things tidy. They are meant to
> force
> the compositing order, like parentheses in a mathematical equation. 
> Groups have their own opacity, blending mode (and layer mask in 2.10).
> Layers in a group are composed, resulting in a virtual layer, which is
> composed with the layers (or virtual layers from groups) in the parent
> level...
>
> It is possible that layers groups add just enough memory to overflow
> the
> tile cache and force Gimp to work with a swap (this really slows tings
> down). See Edit>Preferences>System resources>Tile cache size and set
> it
> to as much as possible (your available RAM minus what you need for
> your
> system and other apps).
>
> Something that can help keep things tidy in 2.10 is t use color tags
> on
> the layers.

-- 
BWK (via www.gimpusers.com/forums)