Use 2 reponse threads
@@ -29,7 +29,7 @@ num_threads int default=8 restart
## Number of threads for response processing and delivery
## 0 will give legacy sync behavior.
## Negative number will choose a good number based on # cores.
-num_response_threads int default=1
+num_response_threads int default=2
## When merging, if we find more than this number of documents that exist on all
## of the same copies, send a separate apply bucket diff with these entries
