My R10 is very unaccurate at clubhead speed, and thats what i bought it for, it will jump from 100mph to 80mph inbetween swings, but 10mph is more comon, but i know that its not me because ive hit alot of golfballs on trackman and other golf radar and my swing will never change more than 1-3 mph, so it will read my accurate number a few times then it just jump down. its not okey that it will miss read half the shots you hit.
im not sure if i waggle the club and then hit and thats why it missread, but you need to fix so you can waggle the club abit, it should not start to read when you waggle the club this is very important for many players.