diff --git a/iguana/iguana777.h b/iguana/iguana777.h
index 3cf9b42ee..4a1828361 100755
--- a/iguana/iguana777.h
+++ b/iguana/iguana777.h
@@ -43,7 +43,7 @@ typedef int32_t (*blockhashfunc)(uint8_t *blockhashp,uint8_t *serialized,int32_t
 #define IGUANA_TAILPERCENTAGE 1.0
 #define IGUANA_MAXPENDHDRS 1
 #define IGUANA_MAXPENDINGREQUESTS 2
-#define IGUANA_PENDINGREQUESTS 32
+#define IGUANA_PENDINGREQUESTS 64
 #define IGUANA_MINPENDBUNDLES 2
 #define IGUANA_MAXPENDBUNDLES 128
 #define IGUANA_BUNDLELOOP 77
diff --git a/iguana/iguana_unspents.c b/iguana/iguana_unspents.c
index 5ccb4f118..99c54241b 100755
--- a/iguana/iguana_unspents.c
+++ b/iguana/iguana_unspents.c
@@ -462,7 +462,7 @@ struct iguana_bundle *iguana_externalspent(struct iguana_info *coin,bits256 *pre
                             iguana_ramchain_prefetch(coin,&spentbp->ramchain);
                             spentbp->lastprefetch = (uint32_t)time(NULL);
                         }
-                        else if ( (duration > 1 || duration > (10 * coin->txidfind_totalmillis)/coin->txidfind_num) && time(NULL) > spentbp->lastprefetch+coin->PREFETCHLAG )
+                        else if ( duration > 1 && duration > (10 * coin->txidfind_totalmillis)/coin->txidfind_num && time(NULL) > spentbp->lastprefetch+coin->PREFETCHLAG && (rand() % 10) == 0 )
                         {
                             printf("slow txidfind %.2f vs %.2f prefetch[%d] from.[%d] lag.%ld last.%u\n",duration,coin->txidfind_totalmillis/coin->txidfind_num,spentbp->hdrsi,ramchain->H.data->height/coin->chain->bundlesize,time(NULL) - spentbp->lastprefetch,spentbp->lastprefetch);
                             iguana_ramchain_prefetch(coin,&spentbp->ramchain);