D2 Air bugs (elevation drop and screen timeout during activity)

Hi guys,

I really like this watch, but got annoyed with some bugs:

1. In running or walking activity, the elevation occasionally drops a lot. It's a shame for an aviation watch, for the altitude is supposed to be the strength of it. I have checked the altimeter setting and make sure indicated altitude is correct or minor pressure change (±20').

 

2. The second one is a small one, sometimes the display times out in strength activity when display timeout is set to "not in activity"