First Search Connexion is very slow

Hello,

When a user trry to connect to the EV search interface is very slow. If the user reused this search  interface, the connexion is fast.

I tried without success  to disable  the "Recycle worker processs in minutes in the "EnterpriseVaultAppPool" in  (Regular Time Interval). But the problem is the same.

I have already set up with another client and it already worked. 

the only difference is that actual client is on MSCS Cluster. 

Are there any specific IIS configuration for the MSCS cluster to disable the timeout application pool ?

Regards,

Grégory

PS : Sorry for my english.