Escribir en FSMC es extremadamente lento

Tengo un ARM Cortex M3 STMF32F103VE enlace , y estoy usando una pantalla LCD con controlador ILI9320 enlace

Estoy usando el control de la pantalla LCD usando el FSMC, y estoy tratando de escribir, por ejemplo, 240 * 100 * 16 bits, y toma aproximadamente 0.1 segundos para esa operación y el reloj es de 72Mhz.

for(i=0;i<240*100;i++)
    {
      *(__IO uint16_t *) (Bank1_LCD_D) = frameBuffer[i];
    }

El código para inicializar el FSMC se copia y pega de la nota de la aplicación STMF32 para usar un LCD TFT con FSMC:

#define Bank1_LCD_D    ((uint32_t)0x60020000)    //disp Data ADDR
#define Bank1_LCD_C    ((uint32_t)0x60000000)    //disp Reg ADDR

/**
  * @brief  Configures the FSMC and GPIOs to interface with the SRAM memory.
  *         This function must be called before any write/read operation
  *         on the SRAM.
  * @param  None 
  * @retval : None
  */
void FSMC_LCD_Init(void)
{
  FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  p;
  //GPIO_InitTypeDef GPIO_InitStructure; 



  p.FSMC_AddressSetupTime = 0x02;
  p.FSMC_AddressHoldTime = 0x00;
  p.FSMC_DataSetupTime = 0x05;
  p.FSMC_BusTurnAroundDuration = 0x00;
  p.FSMC_CLKDivision = 0x00;
  p.FSMC_DataLatency = 0x00;
  p.FSMC_AccessMode = FSMC_AccessMode_B;

  FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;
  FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
  FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_NOR;
  FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
  FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
  FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
  FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
  FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;      





  FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); 

  /* Enable FSMC Bank1_SRAM Bank */
  FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);  
}

y en el código de inicio principal:

solo una llamada a SystemInit(); y RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);