Autosplitter in it's current state is mostly fine but unable to do Gate B split when event is triggered from OoB. The reason is current Gate B split requirement: player Y position must be between 42 and 42.0781, and these values ~approximately correspond to the trigger location on the hallway down. The main problem is OoB: player can spawn in elevator below the floor level, so player's Y position is already less than 42, making autosplit requirement unreachable.

I tried to box trigger by XYZ coordinates, but this solution is suitable only for seeds having Gate B at the same location. I also did not test this requirement in other circumstances (such as SCP-1499 dimension, Gate A and others), so my conclusion: this is improper solution to problem.

I think the only way to make accurate split at the Gate B event to find game variable that stores Gate B event state. When player touches the trigger, event state changes value from 1 to 2, so there definitely is a way to make accurate split.

But I can't find this variable. I lack experience in working with RAM or programs like CheatEngine, so I rely on community help.

Links:

1. Github issue: https://github.com/forxandknives/SCP-Autosplitters/issues/3

2. Exact change to autosplitter (XYZ-method):

vars.gateBEnding = current.xaxis < 65f && current.zaxis < 3f && current.yaxis > 40f && current.deathTimer == 0 ? true : false; 

https://github.com/forxandknives/SCP-Autosplitters/blob/master/Containment_Breach/1.3.11/1.3.11NEW.ASL#L122

3. Exact line where SCP:CB changes the event state: https://github.com/Regalis11/scpcb/blob/master/UpdateEvents.bb#L9256C28-L9256C28

4. Demo vid:

the event state for gate b is stored on the stack, so you cant read it from livesplit unless you allocate your own block of memory and overwrite the assembly to write the event state value to your memory. you can get a pointer to any door in the game though, so if you get the catwalk door that closes when you finish the game you can read its value of open or locked.