IWC 3717 Issue

I have notice that somehow the 3717 that i own, takes about 80 seconds to fully move the minute hand to another minute marker rather than 60 seconds(Not running chrono)?
It is a two and a half years old watch.

How is the timekeeping? Sounds like a service is required.

Is it only lagging after you set the time or does it act like this every minute? The latter would be really strange! Keep in mind that diagnosing mechanical flaws over the Internet is very difficult, it's best you check at an IWC reseller to have it verified.

Kind regards,

Clemens