[krita] [Bug 483317] Disabling multiple layers at once is displayed incrementally

[Manga Tengu]

https://bugs.kde.org/show_bug.cgi?id=483317

--- Comment #2 from Manga Tengu <mangatengu at gmail.com> ---
Hi Nick,

Definitely not a bug but a perf issue indeed.  I must have missed the category
(still can't see where it is set up though).
I have a few points:
- If it can be all toggled at once when in a group layer, maybe it can be even
without it? If so, why not improve it as it would mean it's handled in a not
optimal way?
- 6 10kpx*10kpx layers takes roughly 3 seconds on my machine. (The laptop
itself is in good shape and performs very well when I paint or do computing
stuff) If I reduce the image to 500*500, things get instant.
- I think I remember there are quite some macOS perf issues and artifacts. I
believe you will observe it way better on macOS. To name a couple that are
still bugging: https://bugs.kde.org/show_bug.cgi?id=434131 and
https://bugs.kde.org/show_bug.cgi?id=398689
- Even half a second totally ruins the toggling effect to me. In fact, this
really feels long and sluggish when working. Seems our opinions diverge there.

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