[TYPO3-english] Extbase: Very slow in Frontend

[Hendrik]

Hi,

i have a extbase/fluid extension which needs to access data over
6000-1000 entries in the database (over 10 tables/models).

In the backend (List module etc) it works fine, but the frontend
rendering (caching) is very very slow (up to 5 minutes for a single page).

If i change the repositories to return RAW from the Query Execution it
runs fast, but if extbase is trying to render the Query result to the
objects (models) it hangs up.

I've tried it with PHP-APC, @lazy and more, but nothing helped.

Couldn't extbase render so complex data?
What else can i do to make it faster?

Thanks a lot!

Best
Henny