Rainbow six segie

So I just got my keymander yesterday. I have been trying out new sens. I got the aim down to where I want it but the y-axis is a little weird but I know can of how to fix that and the aim jumping. But when I am walking un-ads I put my setting 200 200 for x and y and it's super slow. I don't how to fix it, please help. Thank you for reading Thread.