Hey! I found an interesting bug while doing my first speedrun. There might already be info about it in another place, but I'm writing about it.
When you have two weapons, start running with one equipped, and then switch to the other while still running, it will allow you to reload that weapon while running.
For now, I have only encountered this bug with the "Steady Aim" perk and having both weapons' mastery.
This saves time and skips having to stop to reload for players with not maxed characters.
I actually was able to get a run with this bug verified. I don't recommend doing it, or at least more than once.
(PD: The run I mentioned was verified but I deleted it after it couldn't be proved it was a random seed, so I'm doing another one instead to appear in the random seed leaderboard.)