Can I implement a nanosecond delayed signal output with the stm32H723 chip

[JinJin]

I would like to implement delay signal output with STM32 MCU.

So I use the original signal input for EXT interrupt.

EXT interrupt's callback activates the timer

If a timer callback is called after a time delay of the desired value, it is implemented by setting the GPIO pin to HIGH.

However, it can be confirmed that the desired amount of delay is achieved, but the timing of the pin becoming HIGH varies each time, and it takes about 1.5 to 1.8us between EXT and TIMER.

I would like to know if the idea can be implemented as STM32 MCU series.

also posting my Clock Configuration pic

[JinJin]

Thank you for all the responses.
At the moment, it’s difficult to make any changes to the hardware, so I will first try testing with TIM Trigger Mode.
Thank you again for your help.