I am experiencing a lot of problems with QGIS Desktop versions >= 2.14 when opening projects with a large number of composers(~100). It appears that each composer is being loaded into memory when the project is loaded instead of when I open the composers.
The project is large and contains a large number of layers. It was created using QGIS 2.10. When I load a version of this project with the same layers but no map composers it opens very quickly (roughly 8 seconds). When I load the version with all composers it takes about 20 minutes for the project to open.
Is there a setting that can be used to change this behavior or should I plan on sticking to older versions of QGIS?