diff --git a/SocketStudy/PComm/PClient.cs b/SocketStudy/PComm/PClient.cs
index 12aea3e..af5c4eb 100644
--- a/SocketStudy/PComm/PClient.cs
+++ b/SocketStudy/PComm/PClient.cs
@@ -165,7 +165,11 @@ namespace PComm
 
 				// if data size is large, ready to receive data;
 				if (dataSize >= LARGE_DATA_SIZE_THRESHOLD)
-					Thread.Sleep(100);
+				{
+					int factor = dataSize / LARGE_DATA_SIZE_THRESHOLD;
+					int gain = factor > 1000 ? 1000 : factor;
+					Thread.Sleep(100 * gain);
+				}
 
 				using (MemoryStream ms = new MemoryStream())
 				{