I see you have a deep nested family. A loose void nested in a host will not (reliable) cut objects in that host.
Further arrays and voids are usually one of the causes for slowing down projects. Void arrays are even worse.
Have alook if you can simplify the family (multiple seperate ones?) . Also see if you can build the family differently and avoid in there voids and arrays as much as possible. Sometimes uiisng outlines or a simple block accompanied with a detail can just as esily convey your ideas. Overmodelling is one of the causes for large and slow projects
Louis

Please mention Revit version, especially when uploading Revit files.