I reviewed your problem statement about Eldo noisetran simulation results not meeting your expectation and I feel there are a number of things about the design and the simulation setup which need to be known before anyone can give helpful comments. I have also discovered from our database that you are a Mentor Graphics customer who has full access to Customer Support, but it seems you have not opened any Service Request to report any problems with our tools. Please note that you can access technical information, documentation, TechNotes and other services 24 hours a day at our SupportNet site:
This site should be your first stop when you have a tool usage problem for which you may want to search for answers from our knowledgebase (or open a new Service Request). I have opened a service request for you (SR 2256090572) so that our engineers in your local area can work with you and resolve the issues you have raised. You will be contacted by someone in you area to discuss the problem and you will possibly be asked to provide a testcase since this is a tricky problem.