Xcelsius & LiveOffice Refresh Take to long time!!

Hi experts

I Need help with this scenario

Version

Xcelsius 2008 SP4

LiveOffice 3.1 sP4

We have xcelsius model with 4 liveoffice objects that are update with the last instance ,this refresh takes 1 hour (4 Blocks 800 rows)

If i run only the excel outside xcelsius the refresh takes only 5 minutes

Any ideas ?

Thank you!!!