Thanks for the help, still a little confused due to how there isn't a sensitivity setting for horizontal in the .ini.
My sens with default 0.022 pitch and 0.022 yaw in CS would be 1.9, but because I play stretched and use m_yaw 0.0165 I multiply it by 1.33 and get 2.527. I want to try playing stretched in PUBG, but in the .ini I have my sens converted from 1.9. How would I go about making it the same? Sorry, hard to wrap my head around this stuff.