It can't be my connection when other games and even Experimental works fine !

It was fixed for a couple of days, and now it's hapenning again ! So annoying !

I did the tests and my connection is apparently normal. But no luck with BattlEye yet.

Unfortunately, It didn't work. :(

DayZ Experimental works absolutely fine by the way...

Could be. But in my case, I ended up disabling Steam's Cloud Save for DayZ and deleted my AppData/DayZ. It seems to have fixed the problem or at least gave me more time to play before the error happens. Before, it was 10 minutes, now it's either 45 minutes or it just doesn't happen at all. I need to run more tests before I give a final answer.

I see that some people are having the same problem. By any chance, isn't this a BattlEye or a DayZ problem?

Already did, their FAQ didn't work, sent them an email, but they never answered. I will try again.

This happens on every server, so I don't think it was because I was playing on a modded one.

Just tried that, and no luck.