LC 6.6.3 and 6.6.4 really slower than LC 6.1.2

[Alain Vezina]

Hi All,

When I press a btn to go back to a previews card it takes 1/10 of a second with LC 6,1,2, but it takes 3.28 second with LC 6.6.3 and 6.6.4. That the same when my app is a standalone.
I use the same script for all trials

on mouseUp
   global sBrowserId
   BrowserInvisible02
   hide btn "accidPronomi"
   hide btn "Rectif"
   go to cd "LaRecherche"
   show btn "avance"
   show btn "recule"
   show fld "flexions"
   if fld "info" is not empty then
      show fld "info"
   end if
   revBrowserSet sBrowserId, "visible", true
   show image "browserimage" of cd "LaRecherche"
end mouseUp

I am on Maveriks and XCode 6.0.1 for LC 6.6.3 and 6.6.4 and on Maveriks and XCode 5.1.1 for the LC 6.1.2 version.

I dont understand. 
Is it a bug I have to report?

Anybody has an idea of what is the problem?

Alain Vezina
Logilangue
www.logilangue.com