Stairs (flights climbed) 100+ Apple Watch 4

Hi,

Since a couple of months my AW says i am climbing a lot of stairs; usually 130+ a day. (flights climbed)

The abnormal thing is; i just use the stairs 1 or 2 times a day. It keeps telling me I do a lot more.

My iPhone X (which the AW is connected with) shows a lot less from the iPhone stats but uses the 130+ from the apple watch..

Reset + full reinstal of the AW did not help, neighter did any update since then.

The apple diagnostics does not show anything, so they say it should be a software thing.

Is there anything I can do?