CPU saturated by Enfold – need to ugrade my server

Hi,
Please note that I have no technical knowledge so I might well write wrong/weird/absurd things…

I have been using a 5 years old Enfold version until recently (it was bought by the web designer) and I have recently bought a Enfold license to make the updatre and since then my website is deadly low. It seems that the CPU of my server is too weak for Enfold and the company which host the server askwhat are the minimal requirements forEnfold to perfom well but I cannot find the info…

Any clues ?

Best,

Olivier