diff --git a/openpype/modules/sync_server/rest_api.py b/openpype/modules/sync_server/rest_api.py
index b7c5d26d15..e92ddc8eee 100644
--- a/openpype/modules/sync_server/rest_api.py
+++ b/openpype/modules/sync_server/rest_api.py
@@ -1,4 +1,5 @@
 from aiohttp.web_response import Response
+from openpype.client.entities import get_representation_by_id
 from openpype.lib import Logger
 
 
@@ -29,11 +30,6 @@ class SyncServerModuleRestApi:
             self.prefix + "/add_sites_to_representations",
             self.add_sites_to_representations,
         )
-        self.server_manager.add_route(
-            "GET",
-            self.prefix + "/files_are_processed",
-            self.files_are_processed,
-        )
 
     async def add_sites_to_representations(self, request):
         # Extract data from request
@@ -54,15 +50,14 @@ class SyncServerModuleRestApi:
         for representation_id in representations:
             for site in sites:
                 self.module.add_site(
-                    project_name, representation_id, site, force=True
+                    project_name,
+                    representation_id,
+                    site,
+                    force=True,
+                    priority=99,
                 )
 
         # Force timer to run immediately
         self.module.reset_timer()
 
         return Response(status=200)
-
-    async def files_are_processed(self, _request):
-        return Response(
-            body=bytes(self.module.sync_server_thread.files_are_processed)
-        )
diff --git a/openpype/modules/sync_server/sync_server.py b/openpype/modules/sync_server/sync_server.py
index 7fd2311c2d..d0a40a60ff 100644
--- a/openpype/modules/sync_server/sync_server.py
+++ b/openpype/modules/sync_server/sync_server.py
@@ -243,7 +243,6 @@ class SyncServerThread(threading.Thread):
         self.is_running = False
         self.executor = concurrent.futures.ThreadPoolExecutor(max_workers=3)
         self.timer = None
-        self.files_are_processed = False
 
     def run(self):
         self.is_running = True
@@ -398,8 +397,6 @@ class SyncServerThread(threading.Thread):
                                               representation,
                                               site,
                                               error)
-                    # Trigger files process finished
-                    self.files_are_processed = False
 
                 duration = time.time() - start_time
                 self.log.debug("One loop took {:.2f}s".format(duration))
@@ -466,7 +463,6 @@ class SyncServerThread(threading.Thread):
         if self.timer:
             self.timer.cancel()
             self.timer = None
-        self.files_are_processed = True
 
     def _working_sites(self, project_name):
         if self.module.is_project_paused(project_name):
diff --git a/openpype/modules/sync_server/sync_server_module.py b/openpype/modules/sync_server/sync_server_module.py
index 7aaf42006c..788032180e 100644
--- a/openpype/modules/sync_server/sync_server_module.py
+++ b/openpype/modules/sync_server/sync_server_module.py
@@ -136,7 +136,7 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
 
     """ Start of Public API """
     def add_site(self, project_name, representation_id, site_name=None,
-                 force=False):
+                 force=False, priority=None):
         """
         Adds new site to representation to be synced.
 
@@ -152,6 +152,7 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
             representation_id (string): MongoDB _id value
             site_name (string): name of configured and active site
             force (bool): reset site if exists
+            priority (int): set priority
 
         Throws:
             SiteAlreadyPresentError - if adding already existing site and
@@ -167,7 +168,8 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
         self.reset_site_on_representation(project_name,
                                           representation_id,
                                           site_name=site_name,
-                                          force=force)
+                                          force=force,
+                                          priority=priority)
 
     def remove_site(self, project_name, representation_id, site_name,
                     remove_local_files=False):
@@ -1655,7 +1657,7 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
 
     def reset_site_on_representation(self, project_name, representation_id,
                                      side=None, file_id=None, site_name=None,
-                                     remove=False, pause=None, force=False):
+                                     remove=False, pause=None, force=False, priority=None):
         """
             Reset information about synchronization for particular 'file_id'
             and provider.
@@ -1678,6 +1680,7 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
             remove (bool): if True remove site altogether
             pause (bool or None): if True - pause, False - unpause
             force (bool): hard reset - currently only for add_site
+            priority (int): set priority
 
         Raises:
             SiteAlreadyPresentError - if adding already existing site and
@@ -1705,6 +1708,10 @@ class SyncServerModule(OpenPypeModule, ITrayModule):
 
         elem = {"name": site_name}
 
+        # Add priority
+        if priority:
+            elem["priority"] = priority
+
         if file_id:  # reset site for particular file
             self._reset_site_for_file(project_name, representation_id,
                                       elem, file_id, site_name)