Fuck, Mei is such a no-skill bullshit character. Just wave your crosshair wildy in the general direction of the enemy and you'll freeze them and can pick them off one by one while taking a coffe. She's the fuckin anti-fun in this game along with Bastion.
Anyone have any good tips on how to tell with this pest? And no "keep your distance" nonsense, if she starts chasing you her freeze spray most likely will reach you. In fact, they should nerf the range on that gun. Seriously.
Zarya is amazing against her, her shield nullify the frozen state, no matter if it's her cryogun or ult. She's really efficient against Mei imo.