So for a dawnbreaker run i have used overcharge to reach specifically the first checkpoint quicker. mostly to cut out the rng nonsense that the level has, and not deal with a horde. I also use overcharge for my other speedruns to reach extraction faster. Due to using a checkpoint and the fact it is outdated now, I have not submitted it.

Using overcharge outside of extraction and extreme lag kills you, and you need to retry and go through a loading screen that can vary depending on your pc's performance and internet connection. Not to mention the game currently suffers from a bug where the mouse is hidden taking off even more time, so getting to the point I'm wondering if we just pause the timer during the game over screen and then unpause it after we load in again, just so these loading times don't require a decent pc and going blindfolded with your mouse.

Also regarding the viability of overcharge this is unrelated to the post, but it leads to rubberbanding often killing you as the timer is still going for it, so I don't even recommend using it for checkpoints outside dawnbreaker, Decovenant's keycard door also causes overcharge to rubberband.