Splitgate has been updated to version 1.18 today by 1047 Games. You can find out the complete patch notes for this update from here.
Since the last patch, players have been complaining about audio bugs in the game. While the latest update doesn’t have an official set of patch notes, we are guessing that the audio issues might be resolved with the release of this new update for Splitgate today. The changelog on PS4 mainly mentions that this is a hotfix for the game.