diff --git a/ubb-la/ubb-la.c b/ubb-la/ubb-la.c
index 7b4750d..9c478c1 100644
--- a/ubb-la/ubb-la.c
+++ b/ubb-la/ubb-la.c
@@ -199,14 +199,13 @@ static void xfers(unsigned long *bufs, int n_bufs, int nibbles,
 		MSCCDR = 0;
 
 		/*
-		 * Experimental value for 12 MSa/s: hangs always/usually with
-		 * 231 cycles, hangs sometimes with 232, hands never (so far)
-		 * with 233.
+		 * Experimental value for 12 MSa/s with speedup to 84 MSa/s:
+		 * hangs often with 29 cycles, hangs never (so far) with 30.
 		 */
-//		for (j = 0; j != 233; j++) asm volatile ("");
+		for (j = 0; j != 30; j++) asm volatile ("");
 
 //		while (MSC_STAT & MSC_STAT_DATA_FIFO_EMPTY);
-		while (!(MSC_STAT & MSC_STAT_END_CMD_RES));
+//		while (!(MSC_STAT & MSC_STAT_END_CMD_RES));
 
 		IN(UBB_CMD);