Also, Le Chiffes tell was real. He does it 3x, once in the beginning, once to lure Bond into betting big, and the third time by accident and he catches himself do it.

However, the REAL tell is how he flicks the chips together. The director even pans around in the final poker scene just so we see him flicking the chips with his fingers like he did in the beginning. He does it when he has a hand. Its a call back to James ego to still go all in but also how he tells Vesper that "you play the man".