diff --git a/DSP_API/ThumbDV/thumbDV.c b/DSP_API/ThumbDV/thumbDV.c
index 4159f45..591ea08 100644
--- a/DSP_API/ThumbDV/thumbDV.c
+++ b/DSP_API/ThumbDV/thumbDV.c
@@ -282,8 +282,19 @@ static int thumbDV_writeSerial( FT_HANDLE handle , unsigned char * buffer, uint3
     FT_STATUS status = FT_OK;
     DWORD written = 0;
 
+    static uint32 min, max;
+    static float avg;
+    static uint32 count = 0;
+    min = 0xFFFFFFFF;
+    max = 0;
+    avg = 0;
+
+    struct timespec time;
+
+
     if ( handle != NULL )
     {
+        clock_gettime(CLOCK_MONOTONIC, &time);
         status = FT_Write(handle, buffer, bytes, &written);
 
         if ( status != FT_OK || written != bytes ) {
@@ -292,12 +303,23 @@ static int thumbDV_writeSerial( FT_HANDLE handle , unsigned char * buffer, uint3
         }
 
         status = thumbDV_processSerial(handle);
+        uint32 ms_elapsed = msSince(time);
+
+        if ( ms_elapsed > max )
+            max = ms_elapsed;
+
+        if ( ms_elapsed < min )
+            min = ms_elapsed;
+
+        avg = avg * .9 + ms_elapsed * .1;
     }
     else
     {
         output( ANSI_RED "Could not write to serial port. Timeout\n" ANSI_WHITE );
     }
 
+    if ( count++ % 100 == 0)
+        output("Min: %d Max: %d Avg: %.1f", min, max, avg);
 
     return status;
 }