[Interest] Qt 5.0.2 speed and widgets

[Иван Комиссаров]

Yes, we are having same problem here. Same setup, AFAIK.

Don't know what's causing problem. 

Also, Mac OS has no noticeable speed regressions, it seems Windows-specific issue.

Иван Комиссаров

14.04.2013, в 21:55, Philippe <philwave at gmail.com> написал(а):

> Compared to Qt 4.8.x, I experiment a very sensible reduction of speed
> in 5.0.2 when widgets are created or complex windows activated.
> In Release mode this is "sort of acceptable",... maybe half speed.
> But in debug mode, this is dramatically slower, up to 6x slower than in
> 4.8.3.
> 
> This is not a painting issue as the speed inside a window has been
> measured to be sensibly the same to 4.8.x (using ANGLE).
> 
> Anyone else sees the same? Any known reason for this?
> 
> Setup: Windows 7, Visual 2010, Qt 32 bit, *very* fast computer.
> 
> Philippe
>