SUMMARY git 0cc05e0 It's not a new behavior, and it only happens when I do this using tablet pen (I'm using Wacom Intuos Pro medium). It usually starts to happen as the brush size reaches around 350px. Brush type doesn't seem relevant. SOFTWARE/OS VERSIONS Windows: Win7 macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
If it's only with the tablet, it might suggest a need for a signal compressor (tablet events are often more frequently sent) if updates take too much time. Didn't check it, so not confirming.
*** This bug has been marked as a duplicate of bug 402831 ***
*** Bug 412960 has been marked as a duplicate of this bug. ***
It's gone in git 8e38e39! (It has been happened until, as far as I remember, git 7572e2d.) There's still some framedrops when the brush size goes over around 600px, but it's not as laggy as it was before and fairly usable. I wouldn't know if you intentionally fixed it, but I think Imma be ok with this for now.
I was wrong about one thing... What's strange is that it was not fixed in the build after Commit 0ca332c7089c690a62c6d7b66515fe9aacdabbdb(:Fix hiccups when doing canvas actions), but it was fixed in the next one I downloaded, which is git 8e38e39. Might be nothing. Just wanted to add.
@acc the next commit (2fea6a9b28f5e9ec90cd06f5bbc79c7ef8e40ca2) was, if I remember correctly, also related, and it improves general performance quite a bit.
(In reply to Tymond from comment #6) > @acc the next commit (2fea6a9b28f5e9ec90cd06f5bbc79c7ef8e40ca2) was, if I > remember correctly, also related, and it improves general performance quite > a bit. The build I downloaded which claimed that Commit 0ca332c7089c690a62c6d7b66515fe9aacdabbdb was applied to it also included the patch you mentioned. :q