--- src/user.h
+++ src/user.h
@@ -18,7 +18,7 @@
 #ifndef __USER_H__
 #define __USER_H__
 
-#define USERS 16
+#define USERS 4
 
 #define OUTPACKETQ_LEN 4		/* Note: 16 users * 1 packet = 1MB */
 /* Undefine to have no queue for packets coming in from tun device, which may