Does DayZ only use UDP or also TCP?

[Wernsley (DayZ) 8]

I just searched the forum and couldn't find a clear answer to this.

I noticed Dwarden stating in one thread that DayZ/Arma2/ToH uses UDP, but to my knowledge a lot of MMO's, online games and the likes use both.

TCP for server info requests and UDP for game traffic.

 

I have no knowledge of how the game is set up server/client wise , but if people are noticing a difference is there some form of TCP traffic?

 

I'm having huge desync issues since yesterday for no real apparent reason other then a new virus scanner that was installed on another PC within the house and i'm trying to find out what the issue is and if its fixable