STM32H7 TouchGFx Running touchfgx_signalVSync() with Timer_interrupt@60Hz, getting wrong time

[KRega.1]

Hi, I'm using an STM32H725 with TouchGFX. I using a custom FMC interface to an LCD.

I'm using the following timer interrupt set at 60Hz to drive the TouchGFX engine as recommended as per documentation. (This is a bare-metal implementation) I have verified that the timer call every 60Hz through a debug pin to oscilloscope.

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
 
	// check which version of the timer triggered this callback
	if (htim == &htim7) // set to approximately 60Hz
	{
		HAL_GPIO_TogglePin(DebugTimer_GPIO_Port,DebugTimer_Pin);
		++Global_Time60Hz;
		touchfgx_signalVSync();
	}
}

However, when I try to say for example use a clock on a TouchGFX screen, the clock increments wayyyyyy to fast. What can be the cause of this?

void Screen3View::handleTickEvent()
{
 if (tickCounter++ % 60 == 0) //60
 {
 if (++digitalSeconds >= 60)
 {
 digitalSeconds = 0;
 if (++digitalMinutes >= 60)
 {
 digitalMinutes = 0;
 if (++digitalHours >= 24)
 {
 digitalHours = 0;
 }
 }
 }
 // Update the clock
 Timer.setTime24Hour(0, digitalMinutes, digitalSeconds);
 }
}