Request for Technical Support: Creo Assembly File Lag Issue

We downloaded a Creo assembly file from Enovia for a product development. But, we are encountering significant issues with the file, as it lags right from the moment we try to open it. We haven't experienced this type of problem before. Despite our best efforts, we have been unable to resolve the issue. Therefore, we are seeking technical support from the Creo software team. This is critical assembly for the further development with iterations we expect the support from technical team in higher priority.