diff --git a/tinyusb/host/usbh.c b/tinyusb/host/usbh.c
index 333d2d9a2..a8a9aa3b6 100644
--- a/tinyusb/host/usbh.c
+++ b/tinyusb/host/usbh.c
@@ -289,8 +289,8 @@ tusb_error_t enumeration_body_subtask(void)
   usbh_devices[0].state = TUSB_DEVICE_STATE_ADDRESSED;
 
 #ifndef _TEST_
-  // TODO hack delay 100 ms for slow device (use retry on the 1st xfer instead later)
-  osal_task_delay(100);
+  // TODO hack delay 20 ms for slow device (use retry on the 1st xfer instead later)
+  osal_task_delay(20);
 #endif
 
   //------------- Get first 8 bytes of device descriptor to get Control Endpoint Size -------------//
diff --git a/vendor/freertos/lpc43xx_m4_FreeRTOSConfig.h b/vendor/freertos/lpc43xx_m4_FreeRTOSConfig.h
index 19837b322..e744aef5e 100644
--- a/vendor/freertos/lpc43xx_m4_FreeRTOSConfig.h
+++ b/vendor/freertos/lpc43xx_m4_FreeRTOSConfig.h
@@ -55,9 +55,9 @@
 #ifndef FREERTOS_CONFIG_H
 #define FREERTOS_CONFIG_H
 
-//#include "hal/hal.h"
 #include "LPC43xx.h"
 #include "core_cm4.h"
+#include "lpc43xx_cgu.h"
 
 /*-----------------------------------------------------------
  * Application specific definitions.
@@ -74,7 +74,8 @@
 #define configUSE_PREEMPTION			1
 #define configUSE_IDLE_HOOK				1
 #define configUSE_TICK_HOOK				0
-#define configCPU_CLOCK_HZ				( SystemCoreClock )
+//#define configCPU_CLOCK_HZ				( SystemCoreClock )
+#define configCPU_CLOCK_HZ				( CGU_GetPCLKFrequency(CGU_PERIPHERAL_M4CORE))
 #define configTICK_RATE_HZ				( ( portTickType ) 1000 )
 #define configMAX_PRIORITIES			( ( unsigned portBASE_TYPE ) 16 )
 #define configMINIMAL_STACK_SIZE		( ( unsigned short ) 128 )