diff --git a/CB/Core.py b/CB/Core.py
index d5a2417..b902d91 100644
--- a/CB/Core.py
+++ b/CB/Core.py
@@ -324,7 +324,7 @@ def bulk_check_checksum_callback(self, result):
         self.checksumCache[result[0]] = result[1]
 
     def bulk_check_checksum(self, addons, pbar):
-        with Pool() as pool:
+        with Pool(processes=min(60, os.cpu_count() or 1)) as pool:
             workers = []
             for addon in addons:
                 w = pool.apply_async(self.check_checksum, (addon, ), callback=self.bulk_check_checksum_callback)