2nd USB-C cable (even not charging) affecting 1st USB-C Power
Found I must remove 2nd USB-C wire (even it's not charging) for 1st USB-C to get max performance. As my Laptop's Transformer is 45W, I can tell 1st USB-C can only provide < 45W if 2nd USB-C is plugged in (not charging other device). Not very convenient.