Loading time differences between Flex1 Flex2 ?

hi all,
we have upgraded our Portal system up to 7.01 SP5 . now all our Visual Composer Modells will be compiled with Flex2 and they are so painfull slow. first the initilizing phase took much more longer then Flex1 compiled modells. if this phase is finished, i see my layout but till i can use it, it tooks another 15-30 seconds.
we also use the "optimize for speed" option in VC but nothing happens. we also tried to enable and disable the Option "enable flex controls for portal theme". same result painfull slow.
the same Modell is 10 times faster in Flex1 then the Flex2 compiled one.
is there any workaround to get it faster ?
thx for your help
Tony Wienhold
UPDATE:
i made a small check on the iexplorer.exe in taskmanager when he is loading the modell.
the system makes crazy stuff with the iexplorer process. 50%CPU ussage, seems to me OK, but it takes 50 sec for the whole loading. IE is frozen at this time and he blows up the MEM Usage for the process from 150000 MB up to 1150000 MB .
what is he doing ? 1GB Mem usage more ? can someone confirm this behavior ?
after these 50 sec only the layout is fully loaded. not till then i can start to enter some variables or something like that.
Edited by: Tony W on Nov 20, 2009 5:02 PM

any idea's ?

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Solved!
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