Windows Server 2012 - IIS 8.0 - IIS Worker Process Consumes more memory

Hi Members,

I have hosted a webapplication in Windows Server 2012 with IIS 8.0. 

• The problem is CPU Usage always above 90% (Even when no request was received/served) . IIS Worker Processconsumes more memory (85%)
• I am 100% sure there is no issue with the application, since it had already worked fine with IIS 7.5
• I made some changes as per the instruction given in the link. However it helped to reduce the CPU utlilization only up to 10%. 

 If anyone had come across the same issue, please give some solution,

Thanks,