Since today I get disconnected from every server, every mission, with or without mods after 15 - 20 minutes in the game:

On my screen: "No message received for XX seconds"

Chatbox for other players: "Player is losing connection" and "BattlEye Client Not Responding".

Then I get kicked and have to disconnect.

This happens every 15 minutes, like I said on every server, no matter what ping.
Every single try.

1. Did manual install of Battleeye
2. Router Reseted
3. Port Forwarding for all relevant ports
4. Steam-check on damaged Arma 3 files = Everything okay

Still getting kicked after 15 minutes. Its like you can almost set your clock on that disconnect.
Like I said:

1. On Every Server
2. Every Mission
3. With or without mods
4. no matter what ping or serverlocation
5. Internetconnection is stable and active the whole time (In fact I can talk to my m8s in TS while I get disconnected)
6. No slowdown or desync
7. Pretty exact after 15 minutes every single game online
8. Happened since the last update. The day before everything was fine

This can't be some kind of servererror or something. It looks like some kind of timeout to me. Its way to precise and recurrent to be a chaotic malfunction.