diff --git a/iguana/iguana_realtime.c b/iguana/iguana_realtime.c
index 34ce11385..943b3f891 100755
--- a/iguana/iguana_realtime.c
+++ b/iguana/iguana_realtime.c
@@ -468,7 +468,7 @@ int32_t iguana_realtime_update(struct supernet_info *myinfo,struct iguana_info *
 }
 #endif
 
-#define FAST_UTHASH
+//#define FAST_UTHASH
 #ifdef FAST_UTHASH
 #undef uthash_malloc
 #undef uthash_free
diff --git a/iguana/iguana_unspents.c b/iguana/iguana_unspents.c
index 35ac85ac0..5d7a547a3 100755
--- a/iguana/iguana_unspents.c
+++ b/iguana/iguana_unspents.c
@@ -122,7 +122,7 @@ int32_t iguana_unspentindfind(struct supernet_info *myinfo,struct iguana_info *c
     {
         if ( bp->lastprefetch == 0 )
         {
-            iguana_ramchain_prefetch(coin,&bp->ramchain,0);
+            iguana_ramchain_prefetch(coin,&bp->ramchain,2);
             bp->lastprefetch = (uint32_t)time(NULL);
         }
         U = RAMCHAIN_PTR(rdata,Uoffset);