It will be improved after launch, DICE confirms.
The server tick rate for a multiplayer game is how many times a game communicates in data packages to and from the server. Essentially, the higher the server tick rate, the better (since there is less potential for lag and players skipping around all over the map that way).
DICE has confirmed that the server tick rate for Battlefield 5 will be 30Hz on consoles, and 60Hz on PC. In simple language, this means that the console versions of Battlefield 5 will communicate with the server 30 times per second, while the PC version communicates 60 times per second. It’s an okay figure for the console versions, but don’t despair either way. DICE has also confirmed that the tick rate across the board will be improved after launch.
This is, however, still better than Black Ops 4, which has a server tick rate of 20Hz for the Blackout mode—meaning even the console versions of Battlefield 5 are one and a half times better.
Battlefield 5 launches for PS4, Xbox One, and PC on November 20. If you’re interested in learning more about the game, make sure to check out the latest dev diary for its single player campaign.
We will start out with the same settings at BF1. 30hz on console, 60hz on PC. But that's a start, and we'll invest in improving that too.
— David Sirland (@tiggr_) October 23, 2018