I've also noticed how slow the layers are and have gone through earlier 64-bit releases to compare. Krita 2.8.79.14 is where the layer operations slow down. The layers in Krita 2.8.79.13 on Windows are still speedy. Hopefully this is of use.

Can you check the git number in the aboutbox of those two versions? That would be a huge help!

Hm... .13 is where boost had been introduced... : https://krita.org/item/after-the-kickstarter/

The .14 release is... https://www.kickstarter.com/projects/kr ... sts/932797 the perspective transform. How strange.

EDIT: so between http://quickgit.kde.org/?p=calligra.git ... eb2c17e5f6 and http://quickgit.kde.org/?p=calligra.git ... e05be356e0

EDIT 2: Nezumi, we'd still like the git hashes (it looks like this in the about Krita: (git f28e196) )

Krita 2.8.79.13: git b9d1bbb
Krita 2.8.79.14: git 87bc136

@Nezumi, thanks!

Little update: It turns out, that aside from perspective transform, that build also had a lot of OpenGL optimisations. These might possibly cause the problems(though we're not sure why), but we're still figuring out which ones exactly are causing it(we could technically revert all of them, but it would be nice to know why they are slowing down the windows build). This'll take a while, but rest assured, work is being done.

Hi, I'd just like to say that I've encountered the same issue both on Windows 8.0, Lubuntu and Ubuntu Gnome. Basic operations like zooming in and out or panning the canvas can freeze everything for half a minute or so. Creating brushstrokes also lags by several seconds and if you hit control + z the results take quite a while to appear. Using erase and fill operations in Windows also created rendering artifacts which didn't disappear.

I'll try reverting to the version mentioned above, and also the optimisations mentioned.

My specs are:
Laptop: N550LF (ASUS-NotebookSKU) ASUSTeK COMPUTER INC.
Intel® Core™ i7 4500U Processor
NVIDIA® GeForce® GT 745M with 2GB/4GB DDR3 VRAM
DDR3L MHz SDRAM, 2x SO-DIMM socket, SO-DIMM 8Gb

I fiddled around with the options a little, tried various combinations of enabling/disabling OpenGL and a few other things, but no joy. Brushing is smooth enough provided you don't move the mouse too fast, if you do it looks like running an image manipulation program from the 80s.

How would I got about getting a binary for the earlier versions mentioned above? Or do I have to compile it from scource?

Development builds are here: http://files.kde.org/krita/windows/ -- and the 2.8 downloads here: http://kritastudio.com/desktop.html (I should do an updated 2.8 build, but I haven't had any time in the past two weeks).

I also discovered that my license for vtune has expired, making performance tuning on Windows pretty hard, I'll have to ask Intel if I can get another extension.

Thanks, but I'm looking for the linux builds. Is there any handy archive of past binaries?

Alternately, is there likely to be a new development build soon with the problematic openGL bit axed?

I don't know whether the Krita Lime repo has old builds, so you might have to build Krita from source on Linux: http://www.davidrevoy.com/article193/bu ... x-for-cats

Also, note that a) I haven't seen any slowdowns myself on Linux. I've only worked on Linux in the past couple of weeks, haven't tested on Windows yet. and b) we don't yet know what might have caused the slowdown on Windows, so it's not something that can be 'axed'.

Besides, I'll be at Latinoware next week to talk about free graphics software, so I won't be doing any development builds for Windows or OSX.

Right now, if you're using Krita for production work and are experiences problems, the best thing to do is go back to the 2.8 release. The development builds are, after all, development builds

Thanks for the clarification.

Just to be clear:
- I'm not using it for any professional work, i was just getting sick of GIMP's UI so I decided to give Krita a go. The UI is fantastic by the way, very professional, but the actual tools just aren't keeping up right now.
- I'm not sure if this is a slow down or a persistant problem. This is the first time I've tried Krita in Linux.
- The version I have installed is the standard one from the Ubuntu software center (2.8.1), not sure if that's the development version or not. I'll try hunting down 2.8 at any rate and give that a go.

Essence of Orange wrote:Thanks for the clarification.

Just to be clear:
- I'm not using it for any professional work, i was just getting sick of GIMP's UI so I decided to give Krita a go. The UI is fantastic by the way, very professional, but the actual tools just aren't keeping up right now.
- I'm not sure if this is a slow down or a persistant problem. This is the first time I've tried Krita in Linux.
- The version I have installed is the standard one from the Ubuntu software center (2.8.1), not sure if that's the development version or not. I'll try hunting down 2.8 at any rate and give that a go.

Ah, no, that's not the development version. It is however, a pretty old version, we're on 2.8.5 now for the stable releases. See if you can hunt down 2.8.5 first before searching for other versions.(2.8.79 series is 2.9 alpha development release).

Oh? Thanks, I'll give the newer version a go.

On Linux there should be no slowdown. At least so far nobody reported that and I think we would have noticed that.

If you're using 2.8, please also check your settings, whether you have OpenGL enabled or not. Krita does require fairly beefy hardware, but on my T430 with an Intel GPU and 4 GB of Ram, everything works quite smoothly (depending on image sizes)