The economy of Star Wars Battlefront 2 is based entirely around credits now that premium transactions have been removed from the game, but they can take a lot of time to earn. Clever players have already found ways to cheat the system, however: you can farm credits without being removed from the game due to inactivity by simply adding a few rubber bands to your controller.
Right now, you can get a minimum amount of credits just for showing up, which is what these farms are after. You can increase the amount you earn by doing well and taking part of each objective — and credits are given for playing the campaign and arcade mode as well — so this is merely the easiest way to get credits without putting any actual work into the process. This is what happens when your economy is bad. Things get sad for everyone, very quickly.
Discussion
Source: [H]ardOCP – Star Wars Battlefront 2 Players Are Ruining the Game with Rubber Bands