Hi today i went out for my 5th flight with my my spark and about 3 min i noticed that the altitude reading read 5.2ft while i was atleast 60 ft up brought it back down then back up signal is good still wrong reading so brought it back down only to have it come down like a fpv racer and i mean all but fel from the sky .called dji and reinstall dji4.0 did nothing now i got go back to the store and get another they wanted me to send in no way i only had for four days .and my luck ill haft to wait for two weeks to get a new one my luck

Just want to verify, how about the environment when you went out for your 5th flight and noticed the altitude problem? It's foggy or not?
You have get a replacement from the dealer, right? Please fly in a suitable environment and check the performance.
Keep us posted, thanks.