Mia's lifeboat section is faster and not doing the fight saves time.

Unless you find other exploits to get out of bounds this one is seemingly pointless. And cutscenes let you go to the next objective/event. Would skipping work?

There hasn't been anything worthy of using oob in a run yet. The only way to trigger next events is to complete your current objective. Going anywhere unintended will result it you beeing restricted in actions or being trapped.

It seems it is not useful as the game checks what objective you are on. Only way it could be useful is if getting something early would be faster or using it to get a faster line in a longer objective. Any kind of "Going to the boat" Doesn't work.

Yeah. Thats a newer speedrun and ng hasn't changed much. Normal and amature are mostly the same

When using obs I get some lag but I would just suggest looking at Nvidia control pannel settings. It was weird for me sometimes. I have a GTX860M also.

There are gliched runs on the boards so I doubt there would be a problem.

In LiN there is a way to get oob legit on coop but only from the mansion. I strongly doubt that you could get oob from the underground.