Altimeter is going crazy

For a peiod of time, altimeter from my fenix5x, it's going crazy. It's goind down a lot or it's going up. And everyday it count floors without climbing any: 1 to 6 floors without climbing any.

I don't know what to do so the altimeter will be again what it was to be. I am having latest beta software.
  • One of my 5x's and a fenix 3hr ( had four replaced for various reasons ) altimeter started fluctuating like that... going up a thousand feet or so a day.... I could reset it and watch it climb.. product support replaced mine..( after master reset etc)... as it was a well known issue for some people.
    I think going up one or two floors without actually going up.. per day would be pretty normal.... six is pretty high though without going up...but there could be other factors.
    There have been many threads about this issue a while back in other fenix sub forums to.. as well as the 5x forum... as well as advice on how to atempt to temporally fix it... with soaking.
    I just had mine replaced due to the fault.
    All the best.