It's unclear what caused the beef, but we're told T.I. swung at Floyd ... their giant bodyguards jumped in to separate them ... and then the all out melee began.
At one point you hear Floyd telling at T.I., "control your bitch."
Police confirm a Fatburger employee was slashed during the fight, but he refused treatment and did not want to cooperate with investigating officers. In other words ... no snitching.
Less than a month ago, T.I. and Game were in the middle of a near riot with LAPD officers outside Supperclub.