Make export threads advanced config setting

plexpy/config.py

@@ -97,6 +97,7 @@ _CONFIG_DEFINITIONS = {
     'DO_NOT_OVERRIDE_GIT_BRANCH': (int, 'General', 0),
     'ENABLE_HTTPS': (int, 'General', 0),
     'EXPORT_DIR': (str, 'General', ''),
+    'EXPORT_THREADS': (int, 'Advanced', 8),
     'FIRST_RUN_COMPLETE': (int, 'General', 0),
     'FREEZE_DB': (int, 'General', 0),
     'GET_FILE_SIZES': (int, 'General', 0),

plexpy/exporter.py

@@ -1660,7 +1660,7 @@ class Export(object):
             method = getattr(self.obj, self.export_type)
             items = method()
 
-        pool = ThreadPool(processes=4)
+        pool = ThreadPool(processes=plexpy.CONFIG.EXPORT_THREADS)
         items = [ExportObject(self, item) for item in items]
 
         try: