Since episode 3 (I think) I've being hearing more of a G1-sounding Megatron. Maybe it's because they are lowering the amount of modulation (I think that's the word). I did a comparison with him in episode 2 and there is a big difference. I heard a faint G1 Megatron in his first appearance but he sounded rough - like in the films but that seems to be going. Compare episode 2 with episode 3 and you'll probably hear it too.