This might be exclusive to Quest for obvious reasons but I noticed that sometimes if instead of ducking to go under obstacles you practically sit on the floor you will start to clip into the floor and if you do this when holding forward long enough you will build up a whole lot of speed and can go really fast. This can be used for fast movement and possibly even clips but this glitch can be big on the quest side of things. also if you jump out of it you keep your speed for a bit and if you fall you keep all of it.