Hi I have a query re my new instinct 2 solar - steps not counting properly playing golf

when I use the inbuilt golf activity on a golf course , the steps counted are well below what I expect and I used to get on my fitbit.

Today I played again and my playing partner had 12800 steps - my instinct 2 solar had 7900. Previously me and my golfing partner were within 500 on a round of golf (typically approx 5 miles). Can anyone explain this , and/or find a solution?

On general use the Instinct is below previous measures but I suspect fitbit was slightly overestimating.

I have previously checked calibration and instinct 2 was fine - gave 208 for the 200 test walk I did (fitbit said 242 on same walk)

So far as i am aware I'm on latest software - it has updated a few times in the 2/3 weeks I've had it.

Thanks Chris