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Delay in autopilot and summon

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Does anyone notice that half sec delay you get with summon and autopilot sometimes? When I use the key to cancel summon, it takes more than half a sec before the car reacts and stops. The same goes for when someone drips into your lane, the car takes another split sec to response rather than reacting immediately
 
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Yes I have noticed that. And I noticed today when I had AP on and rain started, it would hit brakes hard when I approached an overpass. Did it twice. Luckily no one behind me either time, and I then took AP off. I assume it was bc difference in wet road and dry road under overpass. Still, could have been an issue if someone was following behind me for sure. Anyone noticed this? I just updated to 2018.26.3 last week...I’ve only had car (M3) a month, so not sure if this is a new issue or not. Anyone else seen this?
 
Yes I have noticed that. And I noticed today when I had AP on and rain started, it would hit brakes hard when I approached an overpass. Did it twice. Luckily no one behind me either time, and I then took AP off. I assume it was bc difference in wet road and dry road under overpass. Still, could have been an issue if someone was following behind me for sure. Anyone noticed this? I just updated to 2018.26.3 last week...I’ve only had car (M3) a month, so not sure if this is a new issue or not. Anyone else seen this?

I read in manual that not safe to use in rain.