Trying to convert from 3rd Person Shooter to 1st Person Shooter - Fortnite to Siege

[Tiko]

Hello,

            I am not sure if I am doing this correctly but I am trying to convert my sensitivity from Fortnite to Rainbow Six Siege. My Fortnite sensitivity is 400 dpi 0.08 0.43 ads and 0.50 scoped. I have been using the 360 degrees conversion setup for all my games but I feel like my sensitivity in Siege is so much slower then it is in Fortnite, but if I was to go against a wall and measure it, it comes out to the same distance traveled. I believe by default Fortnite's FOV is 80 and I have my Siege FOV set to 90. Can anyone please help?

 

Thank You!