I'm running Windows 7, I've noticed the brush moves much faster when I disable Aero(Desktop Window Manager Session Manager) in Service and also disable Canvas Graphics Acceleration in Krita.

I'm just curious if this is the only case. I've googled it and couldn't find any article about it. Is this normal?

I wouldn't know. It's ages since I last used Windows 7... And it's probably dependent on your system's specs, too.

boudewijn wrote:I wouldn't know. It's ages since I last used Windows 7... And it's probably dependent on your system's specs, too.

Ok. Thanks for answering.

But just in case there are people still using Windows 7, I've tried all possible settings with this. And the speed level goes

[No Aero + No CGA] (fastest) > [No Aero + CGA] = [Aero + CGA] > [Aero + No CGA] (slowest)

Aero + No CGA


No Aero + No CGA

Probably thanks to DWM (which is disabled with Aero off). It's also not specific to Windows 7, but since you can't easily disable DWM on Windows 8 and above, it becomes mostly irrelevant. The delay is likely due to double buffering, but I have not studied these stuff in detail so I can't tell for sure.

But note that if you disable canvas graphics acceleration, canvas rotation can become horribly slow.

In the recent nightly builds things seem to have changed a bit.

disable DWM + enable Canvas Graphics Acceleration
= The fastest.

enable both,
disable both,
enable DWM + disable Canvas Graphics Acceleration
= slow.

disable DWM + enable Canvas Graphics Acceleration seems to be about 4~5 times faster than the rest. It has almost no delay.

Being able to disable DWM is 1 thing I love about using krita in Win7 because of this, but the support is gonna end next year anyway... Just hope any kind of resolution to this issue will be discovered at some point in the future.