According to Star Wars Battlefront II developers, they are aware of the AFK farming currently going on in the game, and plan on fixing it with a server side update (aka no patch required).
Replying to a big thread on EA's Battlefront II forums, developer Sajukaar confirmed that DICE is well aware of the widespread AFK farming and is working to fix it.
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There is no information on how the exploit will be fixed, but all bets point towards it merely treating the symptom rather than the disease. More as it develops.
