diff --git a/libnetutil/netutil.cc b/libnetutil/netutil.cc
index c7dfa5be8..31de2aff4 100644
--- a/libnetutil/netutil.cc
+++ b/libnetutil/netutil.cc
@@ -4153,7 +4153,11 @@ pcap_t *my_pcap_open_live(const char *device, int snaplen, int promisc, int to_m
   /* This is unnecessary with Npcap since libpcap calls PacketSetMinToCopy(0)
    * based on immediate mode. Have not determined if it is needed for WinPcap
    * or not, but it's not hurting anything. */
-  pcap_setmintocopy(pt, 1);
+  pcap_setmintocopy(pt, 0);
+  /* Npcap sets kernel buffer size to 1MB, but user buffer size to 256KB.
+   * Memory is pretty cheap these days, so lets match the kernel buffer size
+   * for better performance. */
+  pcap_setuserbuffer(pt, 1000000);
 #endif
 
   return pt;