I just got my 2017 iMac few weeks ago and I noticed that every time it stays in sleep mode for certain hours, usually overnight, bluetooth keyboard and mouse takes literally 10 minutes to reconnect. If I restart now or do sleep,unsleep, everything is good. It only does it when it's in sleep mode for more than couple hours I guess.
It's so frustrating. Every time I come back from work, I have to deal with this.
It's so frustrating. Every time I come back from work, I have to deal with this.