diff --git a/compiler/options.py b/compiler/options.py
index 8cb99ad3..ce974d63 100644
--- a/compiler/options.py
+++ b/compiler/options.py
@@ -51,8 +51,8 @@ class options(optparse.Values):
     
     # Allow manual adjustment of the delay chain over automatic
     use_tech_delay_chain_size = False
-    delay_chain_stages = 5
-    delay_chain_fanout_per_stage = 3
+    delay_chain_stages = 9
+    delay_chain_fanout_per_stage = 4