I would say this doesn't seem to be working as intended. I've had almost no suspects, on multiple maps, surrender from me yelling at them with my gun pointed in their direction. This doesn't matter if it's early or late in the map.
Only time I can get them to consistently surrender is from blowing a door open and they are close enough to get stunned or if I toss a stun into a room.
Outside of that, the suspects seem to be downright refusing to surrender just from yelling.
Do you find it easier to get them to surrender at the start of a match vs. the end? Are you alone getting enemies to surrender?