diff --git a/pyftdi/serialext/serialusb.py b/pyftdi/serialext/serialusb.py
index 356b95a6..c37ec78c 100644
--- a/pyftdi/serialext/serialusb.py
+++ b/pyftdi/serialext/serialusb.py
@@ -89,7 +89,7 @@ def read(self, size=1):
                 ms = time.time()-start
                 if ms > self._timeout:
                     break
-            time.sleep(0.01)
+            time.sleep(0.0001)
         return data
 
     def write(self, data):