Slow-loading Project Records can be caused by save searches used on sub-lists, especially ones that are loaded from the initial page load or by default.
To troubleshoot this scenario:
- Navigate to the Project Record in question.
- On the first sub-tab, i.e. Tasks/Milestones, change the default view.
If the record loads significantly faster than it previously was, then it is best to consider reviewing the Saved Search criteria. Searches that return over a hundred to a thousand results is expected to load slower as this will utilize a lot of resources.
It would also help if the preference Delay Loading of Sublists under Home > Set Preferences > General > Optimizing NetSuite is enabled. Checking this box will help delay the loading of information on sub-tabs until they are clicked, decreasing page-load times.