Truclient script failing for Second iteration in PC11.52

Hi

I am faing issue while running truclient script in PC11.52. 

In performance center script runs successfully for single iteration and for second itration it fails.

Tried to run the script in VUGEN and it runs sucessfully for multiple iteration.

For second itration,it  is showing "Timed out " error for Home page load tranaction.It takes less than 15 sec to load the home page.

Please suggest what shoud be the possible reason of this behaviour during exeuction of script.

Any leads to solve the same is appreciated.

Thanks

Mayur