Currently this game is so much resource consuming, its being used as a benchmark tool to compare phones with their specs, well unprofessionally. My opinions about this game; being a pc gamer,impossible to play with small screen controls, mostly to shoot and drive cars. Any other outfit no wonder what's its colour, you cannot blend in with the foilage(being a Arma fan :3) because of the graphics settings which totally gets the fun away. Cannot get a private room in the "training map", can't actually remember what it's called, people are just annoying and try to blow you away with grenades when you're just trying to aim practice. Developers are just trying to add features, getting at par with the original game rather than optimising the game performance and it's immense size. You can play the game with keyboard and mouse by setting up an emulator on a pc which is rather unfair to other players.
@
Lampard using discord has several advantages. If you have less than four friends you can just talk directly to your friends in game without the fourth player listening to your conversation.
@
Honey you can turn on "Force GPU rendering" on developer settings. It will increase some performance.