diff --git a/esp32s3/balance/main/gc9a01.c b/esp32s3/balance/main/gc9a01.c
index 5b7734e..b65b624 100644
--- a/esp32s3/balance/main/gc9a01.c
+++ b/esp32s3/balance/main/gc9a01.c
@@ -172,7 +172,7 @@ void gc9a01_init(void)
     ESP_ERROR_CHECK(spi_bus_initialize(SPI2_HOST, &bus, SPI_DMA_CH_AUTO));
 
     spi_device_interface_config_t dev = {
-        .clock_speed_hz = 80 * 1000 * 1000,
+        .clock_speed_hz = 40 * 1000 * 1000,
         .mode           = 0,
         .spics_io_num   = DISP_CS_GPIO,
         .queue_size     = 1,
@@ -192,10 +192,6 @@ void gc9a01_init(void)
 
     /* Backlight on */
     gpio_set_level(DISP_BL_GPIO, 1);
-
-    /* Clear screen to black */
-    display_fill_rect(0, 0, 240, 240, 0x0000);
-
     ESP_LOGI(TAG, "GC9A01 init OK: DC=%d CS=%d SCK=%d MOSI=%d RST=%d BL=%d",
              DISP_DC_GPIO, DISP_CS_GPIO, DISP_SCK_GPIO, DISP_MOSI_GPIO,
              DISP_RST_GPIO, DISP_BL_GPIO);