diff --git a/common_arm64.h b/common_arm64.h
index f21e89346..1fa312d35 100644
--- a/common_arm64.h
+++ b/common_arm64.h
@@ -110,7 +110,7 @@ REALNAME:
 #define HUGE_PAGESIZE   ( 4 << 20)
 
 #if defined(CORTEXA57)
-#define BUFFER_SIZE     (40 << 20)
+#define BUFFER_SIZE     (20 << 20)
 #else
 #define BUFFER_SIZE     (16 << 20)
 #endif
diff --git a/param.h b/param.h
index 2fe3b8a0a..bed2e452b 100644
--- a/param.h
+++ b/param.h
@@ -2238,17 +2238,17 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ZGEMM_DEFAULT_UNROLL_M  4
 #define ZGEMM_DEFAULT_UNROLL_N  4
 
-#define SGEMM_DEFAULT_P	128
+#define SGEMM_DEFAULT_P	512
 #define DGEMM_DEFAULT_P	256
 #define CGEMM_DEFAULT_P 256
 #define ZGEMM_DEFAULT_P 128
 
-#define SGEMM_DEFAULT_Q 240
-#define DGEMM_DEFAULT_Q 1024
-#define CGEMM_DEFAULT_Q 1024
+#define SGEMM_DEFAULT_Q 1024
+#define DGEMM_DEFAULT_Q 512
+#define CGEMM_DEFAULT_Q 512
 #define ZGEMM_DEFAULT_Q 512
 
-#define SGEMM_DEFAULT_R 12288
+#define SGEMM_DEFAULT_R 4096
 #define DGEMM_DEFAULT_R 4096
 #define CGEMM_DEFAULT_R 4096
 #define ZGEMM_DEFAULT_R 2048