Most watches do this. Just set it ahead of the time and then roll it back to make sure the cannon pinion friction moves everything correctly. I set all of my watches this way. I wouldn't worry about it.

 

Checked my Certina powermatic 80 and my quartz Seiko - Seiko doesn't have any play at all, Certina barely any, may be 0.2 mm. So this might be a "feature" of the Rado chronograph, I guess it's 7750 based...
Does any one know which movement this watch use specifically? Rado refers to it as 03.603.011

 

Probably normal, different watches and movements have varying amounts of crown to hand play.

 

Sounds normal for a 7750 derivative. It's one of the movements where aligning the minute hand with the hour hand precisely can be a bit fiddly.