Hi all Ive been trying to fix this issue since the last patch.
Finally I chatted to some friends who also had the problem.
Heres the easy fix...........
Go to https://www.atomicgamer.com/games/3709/navy-field/files
and download the game client for version 1.320
Once downloaded, install as usual and allow it to patch.
Once done click play and you are ready to go.
Seems the prob didnt appear until recently and this version of the client is problem free and It worked for me.