Not sure what you mean by "automatic checkpoints"? If u could send a reference or Smth it would be easier

I mean that at the end of each level time freezes by itself, creating checks​

You want it to pause at the end of each level? Just in case the timing method is RTA not LRT. Theres no autospliters for SR4 at the moment so u would have to press the pause button manually. If that's what you mean

because in the speedruns i see the timer for each level seems very accurate to be done manually, thanks anyway :)

It's pretty accurate but most times when runs are retimed they can g from a 1:57 to a 1:56 for example. You just have to have a comfortable hotkey.

or viceversa