Scratch Disk settings for a shared Premiere project:
File> Project Settings (Tied to project, moves with project)
General Tab
-Set Title Safe to: 33, 10, 10, 10.
This reflects the new 90% PBS Red Book Title safe standard for both 16×9 and 4×3 Title Safe.
-Check > Display the project item name and label color for all instances. It makes colors in Project & Timeline consistent.
Edit > Preferences > Media
Both should be local, preferably on a 3rd drive. Unfortunately that means that in a shared project setup the Cache files will get regenerated when you open the project in another room. Until Adobe gets it’s act together this is just how it is. Check the “Write XMP ID” box for a better database experience.
Note: You get the best performance out of Premiere with all local drives. Adobe doesn’t know how to deal with files on a network!.