STM32H7 FMS驱动 3.5寸ILI9486 LCD刷新率低问题

boom

求助大家一个关于STM32H7 FMS驱动 3.5寸ILI9486 LCD刷新率低问题。
背景：我制作一款示波器，需要通过3.5寸ILI9486 LCD来显示波形变换，由于我采用的是STM32H750VBT6型号单片机，内存不大，故没有采用单片机内部显存来设计，而是直接将要显示的内容写入ILI9486中，出现屏幕闪烁的情况。
1.采用FreertOS操作系统
2.主频400MHz
3.FMC时钟200MHz
4.设置了一个任务用于向ILI9486写入波形图像，每vTaskDelay(3);（估计大概3ms）执行一次局部（大概中间3寸左右的位置）刷新
5.FMC设置代码如下：
void MX_FMC_Init(void)
{
  /* USER CODE BEGIN FMC_Init 0 */

  /* USER CODE END FMC_Init 0 */

  FMC_NORSRAM_TimingTypeDef Timing = {0};
  FMC_NORSRAM_TimingTypeDef ExtTiming = {0};

  /* USER CODE BEGIN FMC_Init 1 */

  /* USER CODE END FMC_Init 1 */

  /** Perform the SRAM1 memory initialization sequence
  */
  hsram1.Instance = FMC_NORSRAM_DEVICE;
  hsram1.Extended = FMC_NORSRAM_EXTENDED_DEVICE;
  /* hsram1.Init */
  hsram1.Init.NSBank = FMC_NORSRAM_BANK1;
  hsram1.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
  hsram1.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
  hsram1.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_16;
  hsram1.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
  hsram1.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
  hsram1.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
  hsram1.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
  hsram1.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
  hsram1.Init.ExtendedMode = FMC_EXTENDED_MODE_ENABLE;
  hsram1.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
  hsram1.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
  hsram1.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
  hsram1.Init.WriteFifo = FMC_WRITE_FIFO_DISABLE;
  hsram1.Init.PageSize = FMC_PAGE_SIZE_NONE;
  /* Timing */
  Timing.AddressSetupTime = 0x11;
  Timing.AddressHoldTime = 0;
  Timing.DataSetupTime = 0x15;        //0x55
  Timing.BusTurnAroundDuration = 2;
  Timing.CLKDivision = 0;        //16
  Timing.DataLatency = 0;        //17
  Timing.AccessMode = FMC_ACCESS_MODE_A;
  /* ExtTiming */
  ExtTiming.AddressSetupTime = 0x15;
  ExtTiming.AddressHoldTime = 0;
  ExtTiming.DataSetupTime = 0x15;        //0x15
  ExtTiming.BusTurnAroundDuration = 2;
  ExtTiming.CLKDivision = 0;        //16
  ExtTiming.DataLatency = 0;        //17
  ExtTiming.AccessMode = FMC_ACCESS_MODE_A;

  if (HAL_SRAM_Init(&hsram1, &Timing, &ExtTiming) != HAL_OK)
  {
    Error_Handler( );
  }

  /* USER CODE BEGIN FMC_Init 2 */

  /* USER CODE END FMC_Init 2 */
}

想请教大家，假设LCD驱动程序没问题的情况下我还有什么办法优化屏幕的刷新率呢？感谢！

eric2013

方便发个效果吗