I usually can’t tell the difference in a single oncoming car if they’re auto or manual high beams. So, given how often I know they’re older cars with the manual high beams locked on, maybe I’m not noticing slow autos. Sometimes I can see high beams flicking on and off more frequently than the average driver would, so I assume they auto and have seemed OK. Maybe I’m just too pessimistic about the average driver though and give autos a pass. The few times I’ve driven a Ford with them, they were OK. I beleive I’m very conscientious about high beam use so they were a little delayed for my liking, but I wouldn’t say 3 seconds. Like I’ll watch for light coming over hills and predict the car is coming and be prepared to drop as soon as they appear