min_filesize:       Skip files smaller than this size
     max_filesize:       Skip files larger than this size
     xattr_set_filesize: Set ytdl.filesize user xattribute with expected size.
-                        (experimental)
     external_downloader_args:  A list of additional command-line arguments for the
                         external downloader.
     hls_use_mpegts:     Use the mpegts container for HLS videos.
             return
         speed = float(byte_counter) / elapsed
         if speed > rate_limit:
-            time.sleep(max((byte_counter // rate_limit) - elapsed, 0))
+            sleep_time = float(byte_counter) / rate_limit - elapsed
+            if sleep_time > 0:
+                time.sleep(sleep_time)
 
     def temp_name(self, filename):
         """Returns a temporary filename for the given filename."""
         """
 
         nooverwrites_and_exists = (
-            self.params.get('nooverwrites', False) and
-            os.path.exists(encodeFilename(filename))
+            self.params.get('nooverwrites', False)
+            and os.path.exists(encodeFilename(filename))
         )
 
         if not hasattr(filename, 'write'):
             continuedl_and_exists = (
-                self.params.get('continuedl', True) and
-                os.path.isfile(encodeFilename(filename)) and
-                not self.params.get('nopart', False)
+                self.params.get('continuedl', True)
+                and os.path.isfile(encodeFilename(filename))
+                and not self.params.get('nopart', False)
             )
 
             # Check file already present