Since you are converting from 16:9 to 32:9 using MDH, the 360 distance will be very different. If you instead switch to MDV and match the vertical FOV, you will get a much better result.
https://www.mouse-sensitivity.com/?share=c497e83b0e925878048eac436c7cdda2
This will keep the 16:9 portion of the 32:9 monitor the same as it is on 16:9.