Clio V6 engine noise problem

[lung441]

Hello, I have problem with my PH1 V6 L7X engine after cam belt change.
The sound will appear under a warm operation
And the sound will gone with little rpm up.

 

[clioben182]

Little hard to tell but first thing that comes to mind is cambelt a little too tight and making the water pump noisey. Then again not sure if the water pump is driven off cambelt on the v6.