Application slower on qt 4.8.0 than 4.7.4

castors33

I have an application that I was developing with Qt 4.7.4 but I had the problem (the bug is reported) with the button's (too small) hit area. So I change for Qt 4.8.0. Now my problem with the button is resolved, but my application runs really slower that it ran with Qt 4.7.4. Is there anything I need to do? Kind of settings...

Thanks

---EDIT---

It's my all application that runs slower, every click, every display, everything take twice more time that it used to. Like if I was on an old computer. I'm talking about my application in the deployment form because I'm in the tests. I'm coding on Mac OSX Lion (10.7.4) with Qt 2.4.1

leninbooter

Man, does it become slower when you complie with 4.8.0 only????

utcenter

What I notice is not only are applications slower but compilation time is longer with 4.8 too. Also, I remember there was one particular bug in 4.8 which slashed graphics view performance by half, I am not aware if that got fixed.

leninbooter

Got it, why don't you try compile with 4.8.2 ? just to try out

castors33

yes it was with 4.8.0. I didn't try 4.8.2. but now I'm giving a try I'm downloading it

I hope they have fixed it...

leninbooter

I had to compiled my app with 4.8.0 after being working with 4.7.4 and I didn't notice anything slower, I had another issues but not related to that, hope you get it fixed, otherwise, try solving your 4.7.4 issue with something, I have found out 4.7.4 works very good

DerManu

Crazy. I've made the observation that graphics stuff (especially QPainter/QPixmap drawing based) has doubled or tripled in speed from 4.7.4 to 4.8.1.

castors33

I fully trust you...that's really annoying