Print Booklet - Export Issues.
Before the update back in January roughly the Print Booklet export was quick and very responsive.

For some reason now the booklet export does takes over 3-5 minutes for even a small file which is only 4mb. Previously this would have taken seconds now it is taking long periods of time and also blocking my whole system up which will not allow me to use other programs etc.... This has only happened since the update from 2017 to 2018 Indesign CC.

Has anyone else had this issue and has anyone got a fix for it.