Why Does Vayne Need 7 Seconds To Auto After Tumble?

If you want this lowered, keep in mind that Tumble does not enter cooldown until you attack. If we lowered it to say, two seconds, for example, she would have a tremendous boost to her mobility out of combat or whilst fleeing.

The heck you talking about?

It helps new players learning her more than it punishes her opponents.

that's a lot of seconds

It stops her from repeatedly Tumbling while retreating or chasing.

At the very least, she has to stop and autoattack something if she wants her Q off cooldown quicker.

Reducing the duration would just buff her.

Because the cooldown doesn't start to refresh until after she autos something. This hinders her ability to spam tumble to chase or run away

That works as a disadvantage for her more often than it works as an advantage.

I'd honestly make it even longer. 10s. You want to run away with tumble? Better use that auto, bitch.