I have used krita for some time in my laptop and it Works fine with a 4 core Intel cpu with Intel graphics and it Works fine, but in my desktop with 2 amd gpus in crossfire, drawing is imposible, the brushes lagg a lot when crossfire is enabled, to the point where i have to dissable crossfire to use krita. I would like to know if this is a known issue, if this issue will be fixed (possibly when it will be fixed?) and if this issue also happens in Linux.

description of the problem:

when crossfire is enabled the 940hz gpu core goes at 500hz when using krita, the brushes can actually Paint but you cannot see the brush wile you are painting, lines take 3 more times to be painted, the mouse cannot be seen while the brush is painting. When crossfire is dissabled krita Works perfectly

Well, I had never before heard of "crossfire" so it isn't known. But in general, if your GPU doesn't work with Krita, you can try to tweak the opengl settings (for instance, for AMD it's important to disable the Texture Buffer option), and if that doesn't help, well, the GPU or the driver is most likely to blame, not Krita.

We're not doing really weird things, but even so, from time to time manufacturers bring out drivers that break Krita. For about a year, Intel has had a driver that would make krita show up with a black canvas. Their bug, not ours, and a driver updated fixed that...