It would all come down to the individual players ability. Some like higher sensitivity and some like lower. If you can perform good at that sensitivity i bet you would play at it.

No a lot of players play on like 4-7

When you get that high you shots have a higher chance to miss

I would imagine they play on any sensitivity they feel comfortable with. Not everyone play highest sensitivity however some feel it easier for reaction times but you will find a lot of people are just generally better players with a lower sensitivity

I think if you were a former 'trickshoter' person you could control it, and you could use it, whereas for players like OpTic I don't think they'd use it as it would just be to sensitive, and would try to do a 180 but end up doing a full 360.

There really isn't a answer to this question numerically.

The only answer is professional players play on sensitivities that coerce with their hand eye coordination. For players who have dyspraxia a lower sensitivity will work the best and for those who have sleightorithimis a higher sensitivity would be more tailored for their play style.

What I would say is if you playing on a sensitivity now and you feel it just isn't sitting right with your response times and involuntary reflexes, the either raise it (if it's too slow) or lower it (if it's too quick). You'll find the perfect one with trial and error.

Usually with sensitivity it's down to the players eye coordination and perception like if they are spinning to kill someone behind they they're eyes would have to be able to pick up were the enemy is to them kill them

On public matches I play on 8

But when doing tourneys, gbs, Umg, I play on 5.

Helps for accuracy in my opinion, I can control myself easier.

Some do as they can turn faster so if someone was shooting them from behind they can quickly turn around to kill them. Some don't because they can't handle it.

I'm not a "pro" but i'm really good and I play on 5 or 7